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本页内容为FreeCAD常用术语与定义的词汇表。
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本页内容为FreeCAD常用术语与定义的术语表。


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==0-9==

{{gloss}}
{{term|3D view|content=[[3D_view|3D view]]}}
{{defn|defn=The 3D view is a component of the FreeCAD [[Interface|interface]]. It shows a 3D representation of the model.}}
{{glossend}}

==A==

<div class="mw-translate-fuzzy">
==A==
==A==
{{gloss}}
{{gloss}}
{{term|弧(Arc)}}
{{term|弧(Arc)}}
{{defn|defn=圆周上的任意一段。}}
{{defn|defn=圆周上的任意一段。}}
{{term|Arch|content=[[Arch_Workbench|Arch]]}}
{{term|Arch|content=[[Arch_Workbench|Arch]]}}
{{defn|defn=建筑[[#Workbench|工作台(workbench)]]的缩写, which is used primarily for modeling buildings and structures. Closely related to the [[#Draft|Draft Workbench]].}}
{{defn|defn=建筑[[#Workbench|工作台(workbench)]]的缩写,主要用于构建各种建筑物与结构的模型。它与 [[#Draft|草图工作台]]密切相关。}}
{{term|应用程序(App)}}
{{term|Assembly|content=[[Assembly_Workbench|Assembly]]}}
{{defn|defn=The FreeCAD App layer is AKA Graphical interface ([[#GUI|GUI]]) layer.}}
{{defn|no=1|defn=A set of [[#Part|parts]] that have defined positions in relation to each other.}}
{{term|Assembly|content=[[Assembly|Assembly]]}}
{{defn|no=2|defn=A [[#Workbench|workbench]] which aims to facilitate the creation of assemblies. It is currently in development and not yet part of FreeCAD.}}
{{defn|no=1|defn=相对于彼此的位置关系所定义的一组[[#Part|零件]]。}}
{{term|Axis}}
{{defn|no=2|defn=一种[[#Workbench|工作台]],目标是便于将所创零件装配在一起。当前正处于开发过程中,还未作为FreeCAD的一部分。}}
{{defn|defn=An imaginary line through the origin of the workspace. There are 3 normal axes. They have the classic names of X, Y and Z. X is side to side. Y is up and down. Z is in and out of the page/screen.}}
{{term|Axes}}
{{defn|defn=Plural of [[#Axis|Axis]]}}
{{term|坐标轴(Axis)}}
{{defn|defn=工作空间中,一种通过原点的假想线。普通的坐标轴有3条,典型的名称为X、Y与Z。X是横向的直线。Y是上下方向的直线。Z是页面/平面里外方向的直线。}}
{{glossend}}
{{glossend}}
</div>


==B==
==B==

{{gloss}}
{{gloss}}
{{term|Backtrace}}
{{term|Backtrace}}
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{{defn|defn=See [[#BOPcheck|BOPcheck]].}}
{{defn|defn=See [[#BOPcheck|BOPcheck]].}}
{{term|BOPcheck}}
{{term|BOPcheck}}
{{defn|defn=A setting that allows the Check Geometry tools in the Part WB and OpenSCAD WB to also check geometry made from [[#Boolean Logic|Boolean logic]]. The default setting is "false" (or off) but the user can enable it to provide more accuracy when running a Check Geometry, but this is at the expense of longer Check Geometry processing times. The setting is enabled by navigating to Tools > Edit Parameters > Preferences folder > Mod folder > Part folder > Check geometry folder, then double-clicking "false" in the right pane, changing the value to "true", clicking the "OK" button, clicking the "Save to disk" button, then clicking the "Close" button. A corresponding screen grab and description of how to enable BOPCheck is [http://forum.freecadweb.org/viewtopic.php?t=8031#p65914 in this forum post].}}
{{defn|defn=A setting that allows the Check Geometry tools in the Part WB and OpenSCAD WB to also check geometry made from [[#Boolean_Logic|Boolean logic]]. The default Check Geometry setting for BOPcheck is "false" (or off). The user can enable BOPcheck to provide more accuracy when running the Check Geometry tool but this comes at the expense of longer Check Geometry processing times. Beginning with FreeCAD 0.19, the BOPcheck setting is most easily enabled from the Settings portion of the Check Geometry widget.}}
{{term|brep}}
{{term|brep}}
{{defn|defn=Native file format for [[#Open CASCADE|Open CASCADE]] and shared by a few applications. FreeCAD can save in *.brep format.}}
{{defn|defn=Native file format for [[#Open_CASCADE|Open CASCADE]] and shared by a few applications. FreeCAD can save in *.brep format.}}
{{term|B-rep}}
{{term|B-rep}}
{{defn|defn=Stands for [http://en.wikipedia.org/wiki/B-rep boundary representation], which is one of two types of 3D models that FreeCAD supports (the other being [[#Mesh|mesh]]).}}
{{defn|defn=Stands for [http://en.wikipedia.org/wiki/B-rep boundary representation], which is one of two types of 3D models that FreeCAD supports (the other being [[#Mesh|mesh]]).}}
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==C==
==C==

{{gloss}}
{{gloss}}
{{term|Callout}}
{{term|Callout}}
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{{term|Chamfer}}
{{term|Chamfer}}
{{defn|defn=The cutting off of an edge, at an angle, to get rid of its sharpness; a beveled edge.}}
{{defn|defn=The cutting off of an edge, at an angle, to get rid of its sharpness; a beveled edge.}}
{{term|1=Clipping Plane}}
{{term|Clipping Plane}}
{{defn|1=The clipping plane is used to cut away at the model in the 3D view. It is just a visual aid and does not actually cut the model.}}
{{defn|defn=The clipping plane is used to cut away at the model in the 3D view. It is just a visual aid and does not actually cut the model.}}
{{term|Clone}}
{{term|Clone}}
{{defn|defn=A copy of an object whereby the copy remains parametric. When the original object is changed the Clone(s) also change to show modifications made to the original object.}}
{{defn|defn=A copy of an object whereby the copy remains parametric. When the original object is changed the Clone(s) also change to show modifications made to the original object.}}
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{{defn|defn=An interchange file format for [[#Mesh|mesh]] models. File extension is *.dae.}}
{{defn|defn=An interchange file format for [[#Mesh|mesh]] models. File extension is *.dae.}}
{{term|Command|content=[[Command|Command]]}}
{{term|Command|content=[[Command|Command]]}}
{{defn|defn=An action invoked from the [[#GUI|Gui]] when you press a toolbar button or type a keyboard shortcut or type into the python console. }}
{{defn|defn=An action invoked from the [[#GUI|GUI]] when you press a toolbar button or type a keyboard shortcut or type into the Python console. }}
{{term|Compound}}
{{term|Compound}}
{{defn|defn=Groups objects together without fusing them like a [[#Boolean Operation|boolean union]] would.}}
{{defn|defn=Groups objects together without fusing them like a [[#Boolean_Operation|boolean union]] would.}}
{{term|CompSolid}}
{{term|CompSolid}}
{{defn|defn=Set of [[#Solid|solids]] connected by their [[#Face|faces]]. CompSolids are needed in [[#FEM|FEM]], where more than one material is used in one FEM-mesh.}}
{{defn|defn=Set of [[#Solid|solids]] connected by their [[#Face|faces]]. CompSolids are needed in [[#FEM|FEM]], where more than one material is used in one FEM-mesh.}}
{{term|1=Constraint}}
{{term|Constraint}}
{{defn|1=A restriction on the geometric relationship between primitives in a [[#Sketch|Sketch]]. If a constraint has a numerical value, it is referred to as Datum (e.g., a distance constraint has a numerical value - the length of an imaginary line connecting the two points). A constraint that has no numerical value (e.g., a Horizontal constraint) is sometimes referred to as Geometric Constraint.}}
{{defn|defn=A restriction on the geometric relationship between primitives in a [[#Sketch|Sketch]]. If a constraint has a numerical value, it is referred to as Datum (e.g., a distance constraint has a numerical value - the length of an imaginary line connecting the two points). A constraint that has no numerical value (e.g., a Horizontal constraint) is sometimes referred to as Geometric Constraint.}}
{{term|Constructive Solid Geometry|content=[http://en.wikipedia.org/wiki/Constructive_solid_geometry Constructive Solid Geometry]}}
{{term|Constructive Solid Geometry|content=[http://en.wikipedia.org/wiki/Constructive_solid_geometry Constructive Solid Geometry]}}
{{defn|defn=A solid modeling method for creating shapes by using [[#Boolean Operation|boolean operations]] on [[#Primitive|primitives]].}}
{{defn|defn=A solid modeling method for creating shapes by using [[#Boolean_Operation|boolean operations]] on [[#Primitive|primitives]].}}
{{term|Coordinate}}
{{term|Coordinate}}
{{defn|defn=A number which defines the position of an object in space in reference to a [http://en.wikipedia.org/wiki/Cartesian_coordinate_system coordinate system].}}
{{defn|defn=A number which defines the position of an object in space in reference to a [http://en.wikipedia.org/wiki/Cartesian_coordinate_system coordinate system].}}
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{{defn|defn=Existing on the same plane.}}
{{defn|defn=Existing on the same plane.}}
{{term|CSG}}
{{term|CSG}}
{{defn|defn=Short for [[#Constructive Solid Geometry|Constructive Solid Geometry]].}}
{{defn|defn=Short for [[#Constructive_Solid_Geometry|Constructive Solid Geometry]].}}
{{term|Cut}}
{{term|Cut}}
{{defn|defn=Applying a [[#Boolean Operation|boolean difference]] between shapes.}}
{{defn|defn=Applying a [[#Boolean_Operation|boolean difference]] between shapes.}}
{{glossend}}
{{glossend}}


==D==
==D==

{{gloss}}
{{gloss}}
{{term|DAG}}
{{term|DAG}}
{{defn|defn=See [[#Directed Acyclic Graph|Directed Acyclic Graph.]]}}
{{defn|defn=See [[#Directed_Acyclic_Graph|Directed Acyclic Graph.]]}}
{{term|Degrees Of Freedom}}
{{term|Degrees Of Freedom}}
{{defn|defn=The number of ways geometry in a [[#Sketch|Sketch]] may vary. For example, if we have a Sketch consisting of only one point, and the point has no [[#Constraint|Constraints]] applied to it, the point has two [[#DOF|DOF]] because it is free to move both vertically and horizontally. Similarly, a Sketch consisting of only a single unconstrained circle has three [[#DOF|DOF]] because the circle can move vertically and horizontally and, additionally, the radius is not defined. It is good practice to constrain a Sketch until it has no [[#DOF|DOF]] remaining, in which case it is said to be [[#Fully Constrained|Fully Constrained]].}}
{{defn|defn=The number of ways geometry in a [[#Sketch|Sketch]] may vary. For example, if we have a Sketch consisting of only one point, and the point has no [[#Constraint|Constraints]] applied to it, the point has two [[#DOF|DOF]] because it is free to move both vertically and horizontally. Similarly, a Sketch consisting of only a single unconstrained circle has three [[#DOF|DOF]] because the circle can move vertically and horizontally and, additionally, the radius is not defined. It is good practice to constrain a Sketch until it has no [[#DOF|DOF]] remaining, in which case it is said to be [[#Fully_Constrained|Fully Constrained]].}}
{{term|Dependency Graph}}
{{term|Dependency Graph}}
{{defn|defn=A third-party graphing tool used to show how objects in a FreeCAD model use or are related to one another. For more information, refer to the [[Std_DependencyGraph|Dependency Graph Wiki page]]|.}}
{{defn|defn=A third-party graphing tool used to show how objects in a FreeCAD model use or are related to one another. For more information, refer to the [[Std_DependencyGraph|Dependency Graph]] Wiki page.}}
{{term|Difference}}
{{term|Difference}}
{{defn|no=1|defn=The result of, or remainder of, a subtraction.}}
{{defn|no=1|defn=The result of, or remainder of, a subtraction.}}
{{defn|no=2|defn=A [[#Boolean operation|Boolean Operation]] in the [[Part_Workbench|Part]] [[#Workbench|workbench]] which is used to subtract one geometry from another; it results in a [[#Cut|Cut]].}}
{{defn|no=2|defn=A [[#Boolean_operation|Boolean Operation]] in the [[Part_Workbench|Part]] [[#Workbench|workbench]] which is used to subtract one geometry from another; it results in a [[#Cut|Cut]].}}
{{term|Directed Acyclic Graph}} (abbreviated as "DAG")
{{term|Directed Acyclic Graph}} (abbreviated as "DAG")
{{defn|defn=A type of [[#Dependency Graph|Dependency Graph]] where the relationship of objects flows in a generally linear direction from start to end with no circular dependencies. When following a DAG there is no flow from one object A to any other objects and then back to that same object A again. In FreeCAD, a graph of the model must always be a DAG.}}
{{defn|defn=A type of [[#Dependency_Graph|Dependency Graph]] where the relationship of objects flows in a generally linear direction from start to end with no circular dependencies. When following a DAG there is no flow from one object A to any other objects and then back to that same object A again. In FreeCAD, a graph of the model must always be a DAG.}}
{{term|DOF}}
{{term|DOF}}
{{defn|[[#Degrees_Of_Freedom|Degrees Of Freedom]]}}
{{defn|defn=[[#Degrees_Of_Freedom|Degrees Of Freedom]]}}
{{term|Draft|content=[[Draft_Workbench|Draft]]}}
{{term|Draft|content=[[Draft_Workbench|Draft]]}}
{{defn|no=1|defn=A FreeCAD [[#Workbench|workbench]] used primarily for 2 dimensional work.}}
{{defn|no=1|defn=A FreeCAD [[#Workbench|workbench]] used primarily for 2 dimensional work.}}
{{defn|no=2|defn=A relief angle on a mold to allow removal of the finished product. See [[PartDesign Draft]].}}
{{defn|no=2|defn=A relief angle on a mold to allow removal of the finished product. See [[PartDesign_Draft|PartDesign Draft]].}}
{{term|Drawing|content=[[Drawing_Workbench|Drawing]]}}
{{term|Drawing}}
{{defn|no=1|defn=A FreeCAD [[#Workbench|workbench]] used to generate 2D representations of a model, also called drawings.}}
{{defn|defn=Describes a representation of geometry through the use of two-dimensional views. Also called plan or [[#Blueprint|blueprint]].}}
{{defn|no=2|defn=Describes a representation of geometry through the use of two-dimensional views. Also called plan or [[#Blueprint|blueprint]].}}
{{glossend}}
{{glossend}}


==E==
==E==

{{gloss}}
{{gloss}}
{{term|Edge}}
{{term|Edge}}
{{defn|no=1|defn=A segment joining two [[#Vertex|vertices]]. This segment can be a straight line or a curve. The CAD kernel defines it as: One-dimensional shape corresponding to a curve and bounded by a vertex at each extremity. A closed circle has therefore only one vertex, where it starts and ends. [[https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3| see Profile: Defining the Topology]].}}
{{defn|no=1|defn=A segment joining two [[#Vertices|vertices]]. This segment can be a straight line or a curve. The CAD kernel defines it as: One-dimensional shape corresponding to a curve and bounded by a vertex at each extremity. A closed circle has therefore only one vertex, where it starts and ends. See [https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3 "Open CASCADE Technology, Profile: Defining the Topology"].}}
{{defn|no=2|defn=The joining line between two faces. It can be curved or straight.}}
{{defn|no=2|defn=The joining line between two faces. It can be curved or straight.}}
{{term|Element}}
{{term|Element}}
{{defn|An item of Sketcher geometry such as a point, a line segment, an arc, a circle, etc.}}
{{defn|defn=An item of Sketcher geometry such as a point, a line segment, an arc, a circle, etc.}}
{{term|1=Extrude}}
{{term|Expression}}
{{defn|1=A general term for extending a 2D object into 3D along 1 direction. See also [[#Pad|Pad]].}}
{{defn|no=1|defn=A general term used in mathematics and programming.}}
{{defn|no=2|defn=In FreeCAD [[Expressions|expressions]] are used to compute values. They can reference and drive object properties. They are used in [[Spreadsheet_Workbench|spreadsheets]] and to control parametric models.}}
{{term|Extrude}}
{{defn|defn=A general term for extending a 2D object into 3D along 1 direction. See also [[#Pad|Pad]].}}
{{glossend}}
{{glossend}}


==F==
==F==

{{gloss}}
{{gloss}}
{{term|1=Face}}
{{term|Face}}
{{defn|1=A 2 dimensional topological construct. For example, a cube has 6 Faces. A face can be curved, like in case of a sphere, which has one face in FreeCAD. The CAD kernel defines it as: Part of a surface bounded by a closed [[#Wire|wire(s)]]. See [[https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3|Profile: Defining the Topology]].}}
{{defn|defn=A 2 dimensional topological construct. For example, a cube has 6 Faces. A face can be curved, like in case of a sphere, which has one face in FreeCAD. The CAD kernel defines it as: Part of a surface bounded by a closed [[#Wire|wire(s)]]. See [https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3 Profile: Defining the Topology].}}
{{term|Facet}}
{{term|Facet}}
{{defn|defn=Often used to describe planar faces on a [[#Mesh|mesh]].}}
{{defn|defn=Often used to describe planar faces on a [[#Mesh|mesh]].}}
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{{term|FCStd}}
{{term|FCStd}}
{{defn|defn=FreeCAD native file format. File extension *.fcstd, *.FCStd}}
{{defn|defn=FreeCAD native file format. File extension *.fcstd, *.FCStd}}
{{term|1=Feature}}
{{term|Feature}}
{{defn|1=A step in a 3d part's evolution in the [[PartDesign_Workbench|Part Design]] [[#Workbench|workbench]] workflow. Examples are [[#Pad|Pad]], [[#Pocket|Pocket]], [[#Groove|Groove]], [[#Fillet|Fillet]], etc. As we create a model in the [[PartDesign_Workbench|Part Design]] [[#Workbench|workbench]], each feature takes the shape of the last one and adds or removes something. Hence a "Pocket" feature is not only the pocketed hole itself, but the whole part with the pocket feature.}}
{{defn|defn=A step in a 3d part's evolution in the [[PartDesign_Workbench|Part Design]] [[#Workbench|workbench]] workflow. Examples are [[#Pad|Pad]], [[#Pocket|Pocket]], [[#Groove|Groove]], [[#Fillet|Fillet]], etc. As we create a model in the [[PartDesign_Workbench|Part Design]] [[#Workbench|workbench]], each feature takes the shape of the last one and adds or removes something. Hence a "Pocket" feature is not only the pocketed hole itself, but the whole part with the pocket feature.}}
{{term|FEM|content=[[FEM_Workbench|FEM]]}}
{{term|FEM|content=[[FEM_Workbench|FEM]]}}
{{defn|defn=[https://en.wikipedia.org/wiki/Finite_element_method Finite Element Method], a [[#Workbench|workbench]] used to solve engineering and mathematical physics problems associated with parts, assemblies and structures.}}
{{defn|defn=[https://en.wikipedia.org/wiki/Finite_element_method Finite Element Method], a [[#Workbench|workbench]] used to solve engineering and mathematical physics problems associated with parts, assemblies and structures.}}
{{term|Fillet}}
{{term|Fillet}}
{{defn|defn=A rounded relief or cut at an edge added for a finished appearance and to break sharp edges. See [[Part Fillet]] and [[PartDesign Fillet]].}}
{{defn|defn=A rounded relief or cut at an edge added for a finished appearance and to break sharp edges. See [[Part_Fillet|Part Fillet]] and [[PartDesign_Fillet|PartDesign Fillet]].}}
{{term|Fork}}
{{term|Fork}}
{{defn|defn=See [[#Forked Model|Forked Model]].}}
{{defn|defn=See [[#Forked_Model|Forked Model]].}}
{{term|Forked Model}}
{{term|Forked Model}}
{{defn|defn=A modeling method, usually accidental and incorrect in FreeCAD, that creates two or more versions of a model from a previous item. (Not to be confused with intentional operations like Array, Clone, PolarPattern, etc.)}}
{{defn|defn=A modeling method, usually accidental and incorrect in FreeCAD, that creates two or more versions of a model from a previous item. (Not to be confused with intentional operations like Array, Clone, Polar Pattern, etc.)}}
{{term|Frenet}}
{{term|Frenet}}
{{defn|defn=When Sweeping a profile along a 3D path, the Frenet parameter controls the orientation of the profile as it travels along the path. If Frenet is true, the profiles are oriented using the Frenet Frame (tangent, binormal, normal) of the path. If Frenet is false the profile's rotation is not restricted. [http://en.wikipedia.org/wiki/Frenet_Frame]}}
{{defn|defn=When Sweeping a profile along a 3D path, the Frenet parameter controls the orientation of the profile as it travels along the path. If Frenet is true, the profiles are oriented using the Frenet Frame (tangent, binormal, normal) of the path. If Frenet is false the profile's rotation is not restricted. [https://en.wikipedia.org/wiki/Differentiable_curve#Frenet_frame Frenet frame]}}
{{term|Freetype|content=[http://www.freetype.org FreeType]}}
{{term|Freetype|content=[http://www.freetype.org FreeType]}}
{{defn|defn=A freely available software library used to extract information from font definition files.}}
{{defn|defn=A freely available software library used to extract information from font definition files.}}
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{{defn|defn=The portion of a solid that lies between two parallel planes cutting it. Used in computer graphics to describe the three-dimensional region which is visible on the screen, the [http://en.wikipedia.org/wiki/Viewing_frustum "viewing frustum"]}}
{{defn|defn=The portion of a solid that lies between two parallel planes cutting it. Used in computer graphics to describe the three-dimensional region which is visible on the screen, the [http://en.wikipedia.org/wiki/Viewing_frustum "viewing frustum"]}}
{{term|Fully Constrained}}
{{term|Fully Constrained}}
{{defn|defn=In [[#Sketcher|Sketcher]], when a [[#Sketch|Sketch]] has no [[#Degrees Of Freedom|Degrees Of Freedom]], the Sketch is said to be "fully constrained" by the applied [[#Constraint|Constraints]].}}
{{defn|defn=In [[#Sketcher|Sketcher]], when a [[#Sketch|Sketch]] has no [[#Degrees_Of_Freedom|Degrees Of Freedom]], the Sketch is said to be "fully constrained" by the applied [[#Constraint|Constraints]].}}
{{term|Fuse}}
{{term|Fuse}}
{{defn|defn=Term commonly used in FreeCAD to refer to a [[#Boolean Operation|boolean union]] of shapes.}}
{{defn|defn=Term commonly used in FreeCAD to refer to a [[#Boolean_Operation|boolean union]] of shapes.}}
{{glossend}}
{{glossend}}


==G==
==G==

{{gloss}}
{{gloss}}
{{term|GDB or gdb}}
{{term|GDB or gdb}}
{{defn|defn=[https://www.gnu.org/software/gdb/ '''G'''NU Project '''D'''e'''B'''ugger], a debugging program used on Unix and other 'nix operating systems in order to get a [[#Backtrace|backtrace]]. "gdb" (without the quotation marks) is also the first part of the command used to start the GDB program itself. An example of how to use GDB with FreeCAD is in [http://forum.freecadweb.org/viewtopic.php?t=7052#p56918 this forum post]}}
{{defn|defn=[https://www.gnu.org/software/gdb/ '''G'''NU Project '''D'''e'''B'''ugger], a debugging program used on Unix and other 'nix operating systems in order to get a [[#Backtrace|backtrace]]. "gdb" (without the quotation marks) is also the first part of the command used to start the GDB program itself. An example of how to use GDB with FreeCAD is in [http://forum.freecadweb.org/viewtopic.php?t=7052#p56918 this forum post]}}
{{term|Geometric modeling kernel}}
{{term|Geometric modeling kernel}}
{{defn|defn=Also called CAD kernel. A set of complex software libraries responsible for the creation of 3D shapes. All operations on objects (extrude, boolean operations, chamfer, fillet) rely on the geometric modeling kernel.}}
{{defn|defn=Also called CAD kernel. A set of complex software libraries responsible for the creation of 3D shapes. All operations on objects (extrude, boolean operations, chamfer, fillet) rely on the geometric modeling kernel.}}
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{{defn|defn=[http://en.wikipedia.org/wiki/Distributed_revision_control Distributed revision control system] used by FreeCAD to host and manage its code base.}}
{{defn|defn=[http://en.wikipedia.org/wiki/Distributed_revision_control Distributed revision control system] used by FreeCAD to host and manage its code base.}}
{{term|[[Std_Group|Group]]}}
{{term|[[Std_Group|Group]]}}
{{defn|defn=Used to organize elements in the Model tree.}}
{{defn|defn=Used to organize elements in the [[#Tree_view|Tree view]].}}
{{term|GUI}}
{{term|GUI}}
{{defn|defn='''G'''raphical '''U'''ser '''I'''nterface. Allows users to interact with FreeCAD through graphical icons and the mouse pointer.}}
{{defn|defn='''G'''raphical '''U'''ser '''I'''nterface. Allows users to interact with FreeCAD through graphical icons and the mouse pointer.}}
{{glossend}}
{{glossend}}


==H==

<div class="mw-translate-fuzzy">
==H==
==H==
{{gloss}}
{{gloss}}
{{term|Half_Space|content=[http://en.wikipedia.org/wiki/Half-space_%28geometry%29 Half Space]}}
{{term|半空间(Half_Space)|content=[http://en.wikipedia.org/wiki/Half-space_%28geometry%29 Half Space]}}
{{defn|defn=当一个平面将3D欧式空间完全分开,即该平面将其分割为两个半空间。}}
{{defn|defn=When a plane completely divides a 3D Euclidian space, the plane forms two half spaces.}}
{{glossend}}
{{glossend}}
</div>


==I==
==I==

{{gloss}}
{{gloss}}
{{term|IGES}}
{{term|IGES}}
{{defn|defn=A file format for the exchange of product data models. Files extensions are *.iges, *.igs. See also [[#STEP|STEP]].}}
{{defn|defn=A file format for the exchange of product data models. Files extensions are *.iges, *.igs. See also [[#STEP|STEP]].}}
{{term|Intersection|content=[http://en.wikipedia.org/wiki/Intersection Intersection]}}
{{term|Intersection|content=[http://en.wikipedia.org/wiki/Intersection Intersection]}}
{{defn|defn=That portion of two or more geometric entities that is common to all. For example, the intersection of two lines is a point.}}
{{defn|defn=That portion of two or more geometric entities that is common to all. For example, the intersection of two lines is a point.}}
{{glossend}}
{{glossend}}


==J==

<div class="mw-translate-fuzzy">
==J==
==J==
{{gloss}}
{{gloss}}
{{term|JT}}
{{term|JT}}
{{defn|defn=A proprietary 3D data format developed by Siemens PLM Software. FreeCAD has no support for JT at this time.}}
{{defn|defn=一种由Siemens PLM Software开发的3D专用数据格式。FreeCAD当前还未支持JT格式。}}
{{glossend}}
{{glossend}}
</div>


==K==

<div class="mw-translate-fuzzy">
==K==
==K==
{{gloss}}
{{gloss}}
{{term|Kernel}}
{{term|内核(Kernel)}}
{{defn|defn=See [[#Geometric modeling kernel|Geometric modeling kernel]].}}
{{defn|defn=参见[[#Geometric modeling kernel|几何建模内核(Geometric modeling kernel)]]}}
{{term|KML}}
{{term|KML}}
{{defn|defn=锁眼标记语言(Keyhole Markup Language) - 一种Google Earth所用的基于XML的地理空间3D数据定义。FreeCAD此时还未支持KML。}}
{{defn|defn=Keyhole Markup Language - an XML-based geospatial 3D data definition file used by Google Earth. FreeCAD has no support for KML at this time.}}
{{glossend}}
{{glossend}}
</div>


==L==
==L==

{{gloss}}
{{gloss}}
{{term|Label}}
{{term|Label}}
{{defn|no=1|defn=A user defined property of an object; used to make the model tree easier to understand by humans.}}
{{defn|no=1|defn=A user defined property of an object; used to make the [[#Tree_view|Tree view]] easier to understand by humans.}}
{{defn|no=2|defn=A string of descriptive text added to a drawing (see [[Draft Label|Draft Label]]).}}
{{defn|no=2|defn=A string of descriptive text added to a drawing (see [[Draft_Label|Draft Label]]).}}
{{defn|defn=Contrast with [[#Name|Name]].}}
{{defn|defn=Contrast with [[#Name|Name]].}}
{{term|Line}}
{{term|Line}}
{{defn|defn=Most often this is used as a synonym for a line segment (see below). In sketcher it is used sometimes with its exact meaning of an infinite straight path.}}
{{defn|defn=Most often this is used as a synonym for a [[#Line_Segment|line segment]]. In Sketcher, it is used sometimes with its exact meaning of an infinite straight path.}}
{{term|Line Segment}}
{{term|Line Segment}}
{{defn|defn=A straight path between two [[#Point|points]].}}
{{defn|defn=A straight path between two [[#Point|points]].}}
{{term|Lock}}
{{term|Lock}}
{{defn|defn=[[Sketcher ConstrainLock|Constraint Lock]]}}
{{defn|defn=[[Sketcher_ConstrainLock|Constraint Lock]]}}
{{term|Loft|content=[http://en.wikipedia.org/wiki/Loft_%283D%29 Loft]}}
{{term|Loft|content=[http://en.wikipedia.org/wiki/Loft_%283D%29 Loft]}}
{{defn|defn=A topological form created by linking consecutive profiles with a surface. Similar to the process used to make fabric covered aeroplanes or boats. Also the FreeCAD function for creating such a form.}}
{{defn|defn=A topological form created by linking consecutive profiles with a surface. Similar to the process used to make fabric covered aeroplanes or boats. Also the FreeCAD function for creating such a form.}}
{{glossend}}
{{glossend}}


==M==
==M==

{{gloss}}
{{gloss}}
{{term|Macro}}
{{term|Macro}}
Line 218: Line 262:


==N==
==N==

{{gloss}}
{{gloss}}
{{term|Name}}
{{term|Name}}
{{defn|defn=An unique identifier for a FreeCAD document object. Once assigned by the program, the Name can not be easily changed. Contrast with [[#Label|Label]].}}
{{defn|defn=An unique identifier for a FreeCAD document object. Once assigned by the program, the Name can not be easily changed. Contrast with [[#Label|Label]].}}
{{term|Non-manifold}}
{{term|Non-manifold}}
{{defn|defn=Non-manifold topology, also called zero-thickness, is two distinct solid bodies connected at a theoretical vertex or edge. It is an unsupported type of shape (not always detected by FreeCAD) that should be avoided, as it can cause trouble with further steps and export.}}
{{defn|defn=Non-manifold topology, also called zero-thickness, is two distinct solid bodies connected at a theoretical vertex or edge. It is an unsupported type of shape (not always detected by FreeCAD) that should be avoided, as it can cause trouble with further steps and export.}}
{{term|Null Shape}}
{{term|Null Shape}}
{{defn|defn=A [[#Shape|Shape]] property that has not been initialized by a program/macro. Usually an error condition.}}
{{defn|defn=A [[#Shape|Shape]] property that has not been initialized by a program/macro. Usually an error condition.}}
{{glossend}}
{{glossend}}


==O==
==O==

{{gloss}}
{{gloss}}
{{term|OCC}}
{{term|OCC}}
{{defn|defn=Acronym for [[#Open CASCADE|Open CASCADE]]. Prior to being open sourced, it used to be named CAS.CADE (abbreviated from Computer Aided Software for Computer Aided Design and Engineering).}}
{{defn|defn=Acronym for [[#Open_CASCADE|Open CASCADE]]. Prior to being open sourced, it used to be named CAS.CADE (abbreviated from Computer Aided Software for Computer Aided Design and Engineering).}}
{{term|OCE}}
{{term|OCE}}
{{defn|defn='''O'''pen CASCADE '''C'''ommunity '''E'''dition. It provides patches, improvements and experiments contributed by users over the official [[#Open CASCADE|Open CASCADE]] library. FreeCAD is known to work on either OCC or OCE.}}
{{defn|defn='''O'''pen CASCADE '''C'''ommunity '''E'''dition. It provides patches, improvements and experiments contributed by users over the official [[#Open_CASCADE|Open CASCADE]] library. FreeCAD is known to work on either OCC or OCE.}}
{{term|OCCT}}
{{term|OCCT}}
{{defn|Open CASCADE Technology. See [[#OCC|OCC]].}}
{{defn|defn=Open CASCADE Technology. See [[#OCC|OCC]].}}
{{term|Open CASCADE|content=[http://www.opencascade.org Open CASCADE]}}
{{term|Open CASCADE|content=[http://www.opencascade.org Open CASCADE]}}
{{defn|The [[#Geometric modeling kernel|geometric modeling kernel]] (software library) underlying FreeCAD. Also called [[#OCC|OCC]] or [[#OCCT|OCCT]] (for Open CASCADE Technology). See also [[#OCE|OCE]].}}
{{defn|defn=The [[#Geometric_modeling_kernel|geometric modeling kernel]] (software library) underlying FreeCAD. Also called [[#OCC|OCC]] or [[#OCCT|OCCT]] (for Open CASCADE Technology). See also [[#OCE|OCE]].}}
{{term|OpenSCAD|content=[http://www.openscad.org/ OpenSCAD]}}
{{term|OpenSCAD|content=[http://www.openscad.org/ OpenSCAD]}}
{{defn|no=1|Name of a script-only based CAD program.}}
{{defn|no=1|defn=Name of a script-only based CAD program.}}
{{defn|no=2|A [[#Workbench|workbench]] in FreeCAD. The [[OpenSCAD_Workbench|OpenSCAD]] [[#Workbench|workbench]] provides an interface for import/export of *.scad and *.csg models, as well as a some utility tools.}}
{{defn|no=2|defn=A [[#Workbench|workbench]] in FreeCAD. The [[OpenSCAD_Workbench|OpenSCAD]] [[#Workbench|workbench]] provides an interface for import/export of *.scad and *.csg models, as well as a some utility tools.}}
{{term|Origin}}
{{term|Origin}}
{{defn|defn=The center of the coordinate system. Everything goes out from here in either the positive or negative directions. As is our view of the universe with Earth being the “origin”.}}
{{defn|defn=The center of the coordinate system. Everything goes out from here in either the positive or negative directions. As is our view of the universe with Earth being the “origin”.}}
Line 247: Line 293:


==P==
==P==

{{gloss}}
{{gloss}}
{{term|1=Pad}}
{{term|Pad}}
{{defn|1=An extension of a [[#Sketch|Sketch]] in a direction perpendicular to the plane of the Sketch. See also [[#Extrude|Extrude]].}}
{{defn|defn=An extension of a [[#Sketch|Sketch]] in a direction perpendicular to the plane of the Sketch. See also [[#Extrude|Extrude]].}}
{{term|Part|content=[[Part_Workbench|Part]]}}
{{term|Part}}
{{defn|no=1|A FreeCAD [[#Workbench|workbench]] primarily used for a [http://en.wikipedia.org/wiki/Constructive_solid_geometry Constructive Solid Geometry] workflow.}}
{{defn|no=1|defn=A FreeCAD [[#Workbench|workbench]] primarily used for a [http://en.wikipedia.org/wiki/Constructive_solid_geometry Constructive Solid Geometry] workflow. See [[Part_Workbench|Part Workbench]].}}
{{defn|no=2|A unibody solid. The lowest level component in an assembly.}}
{{defn|no=2|defn=A FreeCAD Python module, directly interfacing with [[#OCC|OCC]]. See [[Part_scripting|Part scripting]].}}
{{defn|no=3|A container which groups any type of FreeCAD object and has a [[#Placement|placement]]. (Introduced in FreeCAD V0.17.)}}
{{defn|no=3|defn=A container which groups any type of FreeCAD object and has a [[#Placement|placement]]. See [[Std_Part|Std Part]].}}
{{defn|no=4|defn=A unibody solid. The lowest level component in an assembly.}}
{{term|PartDesignNext}}
{{term|PartDesignNext}}
{{defn|defn=Nickname used over the forums to distinguish the [[PartDesign_Workbench|PartDesign]] [[#Workbench|workbench]] in the FreeCAD 0.17 release version from the one in v0.16 and earlier, because of the vast changes introduced.}}
{{defn|defn=Nickname used over the forums to distinguish the [[PartDesign_Workbench|PartDesign]] [[#Workbench|workbench]] in the FreeCAD 0.17 release version from the one in v0.16 and earlier, because of the vast changes introduced.}}
Line 269: Line 317:
{{defn|defn=Said of geometry of which elements all lie on a same plane.}}
{{defn|defn=Said of geometry of which elements all lie on a same plane.}}
{{term|Plane}}
{{term|Plane}}
{{defn|no=1|A flat, two-dimensional surface that extends infinitely far.}}
{{defn|no=1|defn=A flat, two-dimensional surface that extends infinitely far.}}
{{defn|no=2|A primitive two-dimensional object created in the [[Part_Workbench|Part]] [[#Workbench|workbench]].}}
{{defn|no=2|defn=A primitive two-dimensional object created in the [[Part_Workbench|Part]] [[#Workbench|workbench]].}}
{{term|Plot}}
{{term|Plot}}
{{defn|no=1|defn=An outdated synonym for a technical drawing made by a pen plotter. See [https://en.wikipedia.org/wiki/Plotter Plotter]}}
{{defn|defn=<To be added.>}}
{{defn|no=2|defn=Short for plot plan. See [https://en.wikipedia.org/wiki/Site_plan Site plan]}}
{{term|1=Pocket}}
{{defn|no=3|defn=Graphical representation of data. See [https://en.wikipedia.org/wiki/Plot_(graphics) Plot (graphics)]}}
{{defn|1=A [[#Feature|feature]] that removes material from a solid based on a [[#Sketch|Sketch]].}}
{{term|1=Point}}
{{term|Pocket}}
{{defn|defn=A [[#Feature|feature]] that removes material from a solid based on a [[#Sketch|Sketch]].}}
{{defn|1=An item used to reference a single area in the 3D workspace. A “point” is dimensionless. It has a dimension on the screen, usually represented by a “dot” only so we can see where it is. See also [[#Vertex|Vertex]].}}
{{term|Point}}
{{defn|defn=An item used to reference a single area in the 3D workspace. A “point” is dimensionless. It has a dimension on the screen, usually represented by a “dot” only so we can see where it is. See also [[#Vertex|Vertex]].}}
{{term|Polygon mesh}}
{{term|Polygon mesh}}
{{defn|defn=See [http://en.wikipedia.org/wiki/Polygonal_mesh Polygonal_mesh]}}
{{defn|defn=See [http://en.wikipedia.org/wiki/Polygonal_mesh Polygonal_mesh]}}
Line 293: Line 343:
{{glossend}}
{{glossend}}


==Q==

<div class="mw-translate-fuzzy">
==Q==
==Q==
{{gloss}}
{{gloss}}
{{term|Qt|content=[https://www.qt.io/developers/ Qt]}}
{{term|Qt|content=[https://www.qt.io/developers/ Qt]}}
{{defn|1=一种跨平台的应用程序与用户界面接口框架。也作Qt5。}}
{{defn|1=A cross-platform application and user interface framework. Also Qt4.}}
{{glossend}}
{{glossend}}
</div>


==R==

<div class="mw-translate-fuzzy">
==R==
==R==
{{gloss}}
{{gloss}}
{{term|Raytracing}}
{{term|Raytracing}}
{{defn|defn=[http://en.wikipedia.org/wiki/Ray_tracing_%28graphics%29 Ray tracing]}}
{{defn|defn=[http://en.wikipedia.org/wiki/Ray_tracing_%28graphics%29 光线追踪(Ray tracing),简作光追]}}
{{term|Revolve}}
{{term|Revolve}}
{{defn|defn=A tool in the [[Part_Workbench|Part]] [[#Workbench|workbench]]. See [[Part Revolve]].}}
{{defn|defn=A tool in the [[Part_Workbench|Part]] [[#Workbench|workbench]]. See [[Part Revolve]].}}
{{term|Robot}}
{{term|机器人(Robot)}}
{{defn|defn=[http://en.wikipedia.org/wiki/Industrial_robot Industrial robot]}}
{{defn|defn=[http://en.wikipedia.org/wiki/Industrial_robot 工业机器人(Industrial robot)]}}
{{term|Rotate}}
{{term|旋转(Rotate)}}
{{defn|defn=令对象绕某轴旋转,以改变其位于空间的方向。}}
{{defn|defn=Action to spin an object unto an axis to change its orientation in space.}}
{{glossend}}
{{glossend}}
</div>


==S==
==S==

{{gloss}}
{{gloss}}
{{term|Section}}
{{term|Section}}
Line 321: Line 380:
{{term|Shell}}
{{term|Shell}}
{{defn|defn=Shape made of two or more contiguous [[#Face|faces]]. A [[#Manifold|manifold]] (enclosed) shell can be converted into a [[#Solid|solid]].}}
{{defn|defn=Shape made of two or more contiguous [[#Face|faces]]. A [[#Manifold|manifold]] (enclosed) shell can be converted into a [[#Solid|solid]].}}
{{term|1=Sketch}}
{{term|Sketch}}
{{defn|1=A constrained 2D depiction of an object fixed to a plane or a [[#Face|Face]]. In FreeCAD a Sketch is always a 2-dimensional object somewhere in the 3D space.}}
{{defn|defn=A constrained 2D depiction of an object fixed to a plane or a [[#Face|Face]]. In FreeCAD a Sketch is always a 2-dimensional object somewhere in the 3D space.}}
{{term|Sketcher|content=[[Sketcher Workbench|Sketcher]]}}
{{term|Sketcher|content=[[Sketcher_Workbench|Sketcher]]}}
{{defn|A [[#Workbench|workbench]] used to create 2D geometry by use of [[#Element|elements]] and [[#Constraint|constraints]].}}
{{defn|defn=A [[#Workbench|workbench]] used to create 2D geometry by use of [[#Element|elements]] and [[#Constraint|constraints]].}}
{{term|Sketcher Solver}}
{{term|Sketcher Solver}}
{{defn|defn=The internal FreeCAD mechanism that calculates inter-dependencies and effects of adding, deleting, and modifying geometry and associated constraints in each Sketch. Sketcher Solver also calculates the arrangement of all geometry in each Sketch so it can be displayed correctly.}}
{{defn|defn=The internal FreeCAD mechanism that calculates inter-dependencies and effects of adding, deleting, and modifying geometry and associated constraints in each Sketch. Sketcher Solver also calculates the arrangement of all geometry in each Sketch so it can be displayed correctly.}}
{{term|Smooth Line}}
{{term|Smooth Line}}
{{defn|defn=In a Drawing, a line indicating a change between tangent surfaces, as in the transition from a flat surface to a fillet. Also "tangent edge". See [http://www.freecadweb.org/wiki/index.php?title=Drawing_View#Modify_an_existing_view Drawing View]}}
{{defn|defn=In a Drawing, a line indicating a change between tangent surfaces, as in the transition from a flat surface to a fillet. Also "tangent edge". See [[Drawing_View#Modify_an_existing_view|Drawing View]]}}
{{term|Solid}}
{{term|Solid}}
{{defn|defn=Part of 3D space bounded by [[#Shell|Shells]]. A solid has a volume and other properties related to objects with a mass.}}
{{defn|defn=Part of 3D space bounded by [[#Shell|Shells]]. A solid has a volume and other properties related to objects with a mass.}}
{{term|Solver}}
{{term|Solver}}
{{defn|defn=See [[#Sketcher Solver|Sketcher Solver]].}}
{{defn|defn=See [[#Sketcher_Solver|Sketcher Solver]].}}
{{term|1=Stable}}
{{term|Stable}}
{{defn|1=A nickname for the last general release version of the FreeCAD software. This is typically the version available from sources other than the FreeCAD project. Compare with [[#Unstable|Unstable]].}}
{{defn|defn=A nickname for the last general release version of the FreeCAD software. This is typically the version available from sources other than the FreeCAD project. Compare with [[#Unstable|Unstable]].}}
{{term|STL}}
{{term|STL}}
{{defn|''STereoLithography'', also known as ''Standard Tessellation Language.'' A [[#Mesh|mesh]] file format defining only the surface of a 3D object. File extensions is *.stl}}
{{defn|defn=''STereoLithography'', also known as ''Standard Tessellation Language.'' A [[#Mesh|mesh]] file format defining only the surface of a 3D object. File extensions is *.stl}}
{{term|STEP}}
{{term|STEP}}
{{defn|defn=An ISO standard (ISO 10303) for the exchange of 3D data and product manufacturing information. It replaces [[#IGES|IGES]]. File extensions are *.step, *.stp.}}
{{defn|defn=An ISO standard (ISO 10303) for the exchange of 3D data and product manufacturing information. It replaces [[#IGES|IGES]]. File extensions are *.step, *.stp.}}
{{term|SVG|content=[[SVG]]}}
{{term|SVG|content=[[SVG|SVG]]}}
{{defn|[https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Scalable Vector Graphics]. A vector graphics file format.}}
{{defn|defn=[https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Scalable Vector Graphics]. A vector graphics file format.}}
{{term|Sweep}}
{{term|Sweep}}
{{defn|defn=A 3D shape generated from at least one 2D cross-section that traces along a trajectory (path). Commonly used to define the tool as well as the created shape. See [http://en.wikipedia.org/wiki/Solid_modeling#Sweeping Solid modeling]}}
{{defn|defn=A 3D shape generated from at least one 2D cross-section that traces along a trajectory (path). Commonly used to define the tool as well as the created shape. See [http://en.wikipedia.org/wiki/Solid_modeling#Sweeping Solid modeling]}}
Line 346: Line 405:


==T==
==T==

{{gloss}}
{{gloss}}
{{term|Task panel}}
{{term|Task panel}}
{{defn|defn=See [[#Tasks tab|Tasks tab]].}}
{{term|Tasks tab}}
{{defn|defn=A [https://en.wikipedia.org/wiki/Panel_(computer_software) control panel] in FreeCAD that displays content specific to the task at hand. It can show available tools in the active [[#Workbench|workbench]] or prompt for values and options while a [[#Command|command]] is active.}}
{{defn|defn=A [https://en.wikipedia.org/wiki/Panel_(computer_software) control panel] in FreeCAD that displays content specific to the task at hand. It can show available tools in the active [[#Workbench|workbench]] or prompt for values and options while a [[#Command|command]] is active.}}
{{term|Tasks tab}}
{{defn|defn=See [[#Task_panel|Task panel]].}}
{{term|Tessellation}}
{{term|Tessellation}}
{{defn|defn=A tessellation of a surface is the tiling of the surface using one or more geometric shapes, called tiles, with no overlaps and no gaps. In FreeCAD it is needed to display the geometric shapes in the 3D-view. The tessellation relative to the dimensions of a shape can be set in the preferences to get a smoother view of round surfaces at the cost of computation time. See [[Preferences_Editor|Preferences Editor]].}}
{{defn|defn=A tessellation of a surface is the tiling of the surface using one or more geometric shapes, called tiles, with no overlaps and no gaps. In FreeCAD it is needed to display the geometric shapes in the 3D-view. The tessellation relative to the dimensions of a shape can be set in the preferences to get a smoother view of round surfaces at the cost of computation time. See [[Preferences_Editor|Preferences Editor]].}}
{{term|Thickness}}
{{term|Thickness}}
{{defn|no=1|defn=A measure of how thick a shape is.}}
{{defn|no=1|defn=A measure of how thick a shape is.}}
{{defn|no=2|A [[Part_Workbench|Part]] [[#Workbench|workbench]] tool to hollow out a solid and leave a defined uniform thickness.}}
{{defn|no=2|defn=A [[Part_Workbench|Part]] [[#Workbench|workbench]] tool to hollow out a solid and leave a defined uniform thickness.}}
{{term|Toggle}}
{{term|Toggle}}
{{defn|defn=A setting that can be changed between two options, for example between True or False or between Off and On.}}
{{defn|defn=A setting that can be changed between two options, for example between True or False or between Off and On.}}
{{term|Topological Naming}}
{{term|Topological Naming}}
{{defn|A scheme whereby an edge or face, once created, is assigned a permanent name. Internally, FreeCAD identifies edges and faces on a solid by numbering them such as: Edge1, Edge2, Face1, Face2, etc. The problem is that these IDs are somewhat randomly applied, and they will change after something is done to the model that changes the amount of edges and faces. For example, if the model is revised an item linked to a Face2 could later erroneously become linked to a different face (which was renamed to become the new Face2), causing the user unwanted results. As of the FreeCAD 0.17 release Topological Naming has not yet been implemented, and so if an object is modified such that the number of edges or faces changes, the names of the edges or faces of that object might change too.}}
{{defn|defn=A scheme whereby an edge or face, once created, is assigned a permanent name. Internally, FreeCAD identifies edges and faces on a solid by numbering them such as: Edge1, Edge2, Face1, Face2, etc. The problem is that these IDs are somewhat randomly applied, and they will change after something is done to the model that changes the amount of edges and faces. For example, if the model is revised an item linked to a Face2 could later erroneously become linked to a different face (which was renamed to become the new Face2), causing the user unwanted results. As of the FreeCAD 0.20 release Topological Naming has not yet been implemented, and so if an object is modified such that the number of edges or faces changes, the names of the edges or faces of that object might change too.}}
{{term|Torus}}
{{term|Torus}}
{{defn|A primitive shape.}}
{{defn|defn=A primitive shape.}}
{{term|Tracker}}
{{term|Tracker}}
{{defn|defn=Short for bug tracker, the online software application used to keep track of reported bugs or feature requests. See also [[#Mantis|Mantis]].}}
{{defn|defn=Short for bug tracker, the online software application used to keep track of reported bugs or feature requests. See also [[#Mantis|Mantis]].}}
{{term|Tree view|content=[[Tree_view|Tree view]]}}
{{defn|defn=The Tree view is a component of the FreeCAD [[Interface|interface]]. It can be shown as a separate [[#GUI|GUI]] element or as part of the [[Combo_View|Combo View]]. It contains a representation of the document's structure.}}
{{glossend}}
{{glossend}}


==U==

<div class="mw-translate-fuzzy">
==U==
==U==
{{gloss}}
{{gloss}}
{{term|Union}}
{{term|并集(Union)}}
{{defn|defn=一种在所选形状上执行特定[[#Boolean Operation|布尔运算]]的[[Part_Workbench|零件]][[#Workbench|工作台]]工具。}}
{{defn|defn=A [[Part_Workbench|Part]] [[#Workbench|workbench]] tool that performs a [[#Boolean Operation|Boolean operation]] on selected shapes.}}
{{term|1=Unstable}}
{{term|1=不稳定的(Unstable)}}
{{defn|1=对FreeCAD软件最新版本的昵称。此版本中将包括开发者最近实现的许多变更内容。它通常不会出现错误或产生错误结果,但是却未经过完整的测试,因而有一定的风险。}}
{{defn|1=A nickname for a very recent version of the FreeCAD software. This version will contain many changes recently implemented by the developers. It does not typically fail or produce wrong results, but it has not completed testing.}}
{{term|Upgrade|content=[[Draft Upgrade|Upgrade]]}}
{{term|升级(Upgrade)|content=[[Draft Upgrade|Upgrade]]}}
{{defn|defn=A [[Draft_Workbench|Draft]] [[#Workbench|workbench]] tool.}}
{{defn|defn=一种[[Draft_Workbench|草图]] [[#Workbench|工作台]]工具。}}
{{glossend}}
{{glossend}}
</div>


==V==

<div class="mw-translate-fuzzy">
==V==
==V==
{{gloss}}
{{gloss}}
{{term|Vector}}
{{term|向量(Vector)}}
{{defn|defn=具有方向与大小的量。在2D与3D空间的图示中,常以带箭头的线段加以表示。例如,“向北走50步”、“向下9.8 m/s^2(重力加速度)”以及“在x、y、z方向分别为(3,5,6)个单位”皆为向量。在FreeCAD中,通常将向量表示为有序对(x, y)或有序三元组(x, y, z)。}}
{{defn|defn=A magnitude with a direction. Often represented graphically as an arrow in 2 or 3 dimensions. For example, "fifty paces north", "9.8 m/s^2 down", and "(3,5,6) units in the x, y, z, direction, respectively" are all vectors. In FreeCAD, they are most often denoted as ordered pairs (x, y) or ordered triples (x, y, z).}}
{{term|Vertex}}
{{term|顶点(Vertex)}}
{{defn|defn=A lone [[#Point|point]] in space, or the corner of a [[#shape|shape]] where [[#Edge|edges]] meet. The open Cascade Technology defines it, as a zero dimensional [[#shape|shape]] corresponding to a point in geometry. [[https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3| see OCCT Profile: Defining the topology]]}}
{{defn|defn=空间中的单独[[#Point|点(point)]],或[[#shape|图形(shape)]][[#Edge|边(edges)]]间的交点。Open Cascade Technology将其定义为:对应于几何图形中点的零维[[#shape|图形(shape)]][[https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3| 参见OCCT Profile: Defining the topology]]}}
{{glossend}}
{{glossend}}
</div>


==W==

<div class="mw-translate-fuzzy">
==W==
==W==
{{gloss}}
{{gloss}}
{{term|WB}}
{{term|WB}}
{{defn|defn=Short for [[#Workbench|workbench]].}}
{{defn|defn=[[#Workbench|工作台(workbench)]]的缩写。}}
{{term|Wire}}
{{term|连线(Wire)}}
{{defn|no=1|A sequence of connected [[#Edge|edges]] by [[#Vertex|vertices]]. The term wire is used in this sense mainly by Open Cascade Technology [[https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3]]and therefore also inside of FreeCAD.}}
{{defn|no=1|多个[[#Vertex|顶点(vertices)]]间的一系列连接[[#Edge|边(edges)]]。此术语常用于Open Cascade Technology [[https://dev.opencascade.org/doc/overview/html/occt__tutorial.html#OCCT_TUTORIAL_SUB2_3]]之中,因此也用于FreeCAD}}
{{defn|no=2|A [[Draft_Workbench|Draft]] [[#Workbench|workbench]] command that creates a parametric wire.}}
{{defn|no=2|用于创建参数化连线的草图工作台([[Draft_Workbench|Draft]] [[#Workbench|workbench]])命令。}}
{{term|Workbench}}
{{term|工作台(Workbench)}}
{{defn|defn=Also called a module, each [[Workbenches|workbench]] groups a set of tools dedicated to a specific task.}}
{{defn|defn=又称模块(module),每个 [[Workbenches|工作台(workbench)]]囊括了处理某个特定任务的工具集。}}
{{glossend}}
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==X==

<div class="mw-translate-fuzzy">
==X==
==X==
{{gloss}}
{{gloss}}
{{term|X}}
{{term|X}}
{{defn|Commonly refers to the 2D or 3D X [[#Axis|axis]].}}
{{defn|常指2D3D坐标系中的X[[#Axis|坐标轴(axis)]]}}
{{glossend}}
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==Y==

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==Y==
==Y==
{{gloss}}
{{gloss}}
{{term|Y}}
{{term|Y}}
{{defn|Commonly refers to the 2D or 3D Y [[#Axis|axis]].}}
{{defn|常指2D3D坐标系中的Y[[#Axis|坐标轴(axis)]]}}
{{glossend}}
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==Z==

<div class="mw-translate-fuzzy">
==Z==
==Z==
{{gloss}}
{{gloss}}
{{term|Z}}
{{term|Z}}
{{defn|常指3D坐标系中的Z[[#Axis|坐标轴(axis)]].}}
{{defn|常指3D坐标系中的Z[[#Axis|坐标轴(axis)]]}}
{{glossend}}
{{glossend}}
</div>




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Revision as of 17:35, 23 May 2023

本页内容为FreeCAD常用术语与定义的术语表。

Jump to letter: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z (Top)


0-9

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3D view
The 3D view is a component of the FreeCAD interface. It shows a 3D representation of the model.


A

A

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弧(Arc)
圆周上的任意一段。
Arch
建筑工作台(workbench)的缩写,主要用于构建各种建筑物与结构的模型。它与 草图工作台密切相关。
应用程序(App)
The FreeCAD App layer is AKA Graphical interface (GUI) layer.
Assembly
1.  相对于彼此的位置关系所定义的一组零件
2.  一种工作台,目标是便于将所创零件装配在一起。当前正处于开发过程中,还未作为FreeCAD的一部分。
Axes
Plural of Axis
坐标轴(Axis)
工作空间中,一种通过原点的假想线。普通的坐标轴有3条,典型的名称为X、Y与Z。X是横向的直线。Y是上下方向的直线。Z是页面/平面里外方向的直线。

B

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Backtrace
Output from a debugging program that displays the series of instructions FreeCAD followed before a problem occurred.
Bezier Curve
A type of parametric curve.
Blueprint
Old term used for drawing, and coined for its original reproduction process.
Body
A type of container used in the PartDesign workbench that groups a sequence of operations (sketches, construction geometry and features) to create a single contiguous solid. (Introduced in FreeCAD V0.17.)
Boolean Logic
A method of data manipulation by using of the operands: And, Or, Not.
Boolean Operation
A method of manipulating objects by using Boolean Logic. In FreeCAD, the Boolean Operations are: Union (Fuse), Difference (Cut), Intersection, and Section.
Boolean OPerations check
See BOPcheck.
BOPcheck
A setting that allows the Check Geometry tools in the Part WB and OpenSCAD WB to also check geometry made from Boolean logic. The default Check Geometry setting for BOPcheck is "false" (or off). The user can enable BOPcheck to provide more accuracy when running the Check Geometry tool but this comes at the expense of longer Check Geometry processing times. Beginning with FreeCAD 0.19, the BOPcheck setting is most easily enabled from the Settings portion of the Check Geometry widget.
brep
Native file format for Open CASCADE and shared by a few applications. FreeCAD can save in *.brep format.
B-rep
Stands for boundary representation, which is one of two types of 3D models that FreeCAD supports (the other being mesh).
B-spline
A type of parametric curve. See B-spline


C

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Callout
String of text connected to a line pointing to an object in a drawing.
Chamfer
The cutting off of an edge, at an angle, to get rid of its sharpness; a beveled edge.
Clipping Plane
The clipping plane is used to cut away at the model in the 3D view. It is just a visual aid and does not actually cut the model.
Clone
A copy of an object whereby the copy remains parametric. When the original object is changed the Clone(s) also change to show modifications made to the original object.
Coin
Also called Coin3D. Third-party software library used for 3D representation by FreeCAD.
COLLADA
An interchange file format for mesh models. File extension is *.dae.
Command
An action invoked from the GUI when you press a toolbar button or type a keyboard shortcut or type into the Python console.
Compound
Groups objects together without fusing them like a boolean union would.
CompSolid
Set of solids connected by their faces. CompSolids are needed in FEM, where more than one material is used in one FEM-mesh.
Constraint
A restriction on the geometric relationship between primitives in a Sketch. If a constraint has a numerical value, it is referred to as Datum (e.g., a distance constraint has a numerical value - the length of an imaginary line connecting the two points). A constraint that has no numerical value (e.g., a Horizontal constraint) is sometimes referred to as Geometric Constraint.
Constructive Solid Geometry
A solid modeling method for creating shapes by using boolean operations on primitives.
Coordinate
A number which defines the position of an object in space in reference to a coordinate system.
Coplanar
Existing on the same plane.
CSG
Short for Constructive Solid Geometry.
Cut
Applying a boolean difference between shapes.


D

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DAG
See Directed Acyclic Graph.
Degrees Of Freedom
The number of ways geometry in a Sketch may vary. For example, if we have a Sketch consisting of only one point, and the point has no Constraints applied to it, the point has two DOF because it is free to move both vertically and horizontally. Similarly, a Sketch consisting of only a single unconstrained circle has three DOF because the circle can move vertically and horizontally and, additionally, the radius is not defined. It is good practice to constrain a Sketch until it has no DOF remaining, in which case it is said to be Fully Constrained.
Dependency Graph
A third-party graphing tool used to show how objects in a FreeCAD model use or are related to one another. For more information, refer to the Dependency Graph Wiki page.
Difference
1.  The result of, or remainder of, a subtraction.
2.  A Boolean Operation in the Part workbench which is used to subtract one geometry from another; it results in a Cut.
Directed Acyclic Graph (abbreviated as "DAG")
A type of Dependency Graph where the relationship of objects flows in a generally linear direction from start to end with no circular dependencies. When following a DAG there is no flow from one object A to any other objects and then back to that same object A again. In FreeCAD, a graph of the model must always be a DAG.
DOF
Degrees Of Freedom
Draft
1.  A FreeCAD workbench used primarily for 2 dimensional work.
2.  A relief angle on a mold to allow removal of the finished product. See PartDesign Draft.
Drawing
Describes a representation of geometry through the use of two-dimensional views. Also called plan or blueprint.


E

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Edge
1.  A segment joining two vertices. This segment can be a straight line or a curve. The CAD kernel defines it as: One-dimensional shape corresponding to a curve and bounded by a vertex at each extremity. A closed circle has therefore only one vertex, where it starts and ends. See "Open CASCADE Technology, Profile: Defining the Topology".
2.  The joining line between two faces. It can be curved or straight.
Element
An item of Sketcher geometry such as a point, a line segment, an arc, a circle, etc.
Expression
1.  A general term used in mathematics and programming.
2.  In FreeCAD expressions are used to compute values. They can reference and drive object properties. They are used in spreadsheets and to control parametric models.
Extrude
A general term for extending a 2D object into 3D along 1 direction. See also Pad.


F

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Face
A 2 dimensional topological construct. For example, a cube has 6 Faces. A face can be curved, like in case of a sphere, which has one face in FreeCAD. The CAD kernel defines it as: Part of a surface bounded by a closed wire(s). See Profile: Defining the Topology.
Facet
Often used to describe planar faces on a mesh.
FC
Short for FreeCAD.
FCStd
FreeCAD native file format. File extension *.fcstd, *.FCStd
Feature
A step in a 3d part's evolution in the Part Design workbench workflow. Examples are Pad, Pocket, Groove, Fillet, etc. As we create a model in the Part Design workbench, each feature takes the shape of the last one and adds or removes something. Hence a "Pocket" feature is not only the pocketed hole itself, but the whole part with the pocket feature.
FEM
Finite Element Method, a workbench used to solve engineering and mathematical physics problems associated with parts, assemblies and structures.
Fillet
A rounded relief or cut at an edge added for a finished appearance and to break sharp edges. See Part Fillet and PartDesign Fillet.
Fork
See Forked Model.
Forked Model
A modeling method, usually accidental and incorrect in FreeCAD, that creates two or more versions of a model from a previous item. (Not to be confused with intentional operations like Array, Clone, Polar Pattern, etc.)
Frenet
When Sweeping a profile along a 3D path, the Frenet parameter controls the orientation of the profile as it travels along the path. If Frenet is true, the profiles are oriented using the Frenet Frame (tangent, binormal, normal) of the path. If Frenet is false the profile's rotation is not restricted. Frenet frame
FreeType
A freely available software library used to extract information from font definition files.
Frustum
The portion of a solid that lies between two parallel planes cutting it. Used in computer graphics to describe the three-dimensional region which is visible on the screen, the "viewing frustum"
Fully Constrained
In Sketcher, when a Sketch has no Degrees Of Freedom, the Sketch is said to be "fully constrained" by the applied Constraints.
Fuse
Term commonly used in FreeCAD to refer to a boolean union of shapes.


G

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GDB or gdb
GNU Project DeBugger, a debugging program used on Unix and other 'nix operating systems in order to get a backtrace. "gdb" (without the quotation marks) is also the first part of the command used to start the GDB program itself. An example of how to use GDB with FreeCAD is in this forum post
Geometric modeling kernel
Also called CAD kernel. A set of complex software libraries responsible for the creation of 3D shapes. All operations on objects (extrude, boolean operations, chamfer, fillet) rely on the geometric modeling kernel.
Git
Distributed revision control system used by FreeCAD to host and manage its code base.
Group
Used to organize elements in the Tree view.
GUI
Graphical User Interface. Allows users to interact with FreeCAD through graphical icons and the mouse pointer.


H

H

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Half Space
当一个平面将3D欧式空间完全分开,即该平面将其分割为两个半空间。

I

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IGES
A file format for the exchange of product data models. Files extensions are *.iges, *.igs. See also STEP.
Intersection
That portion of two or more geometric entities that is common to all. For example, the intersection of two lines is a point.


J

J

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JT
一种由Siemens PLM Software开发的3D专用数据格式。FreeCAD当前还未支持JT格式。

K

K

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内核(Kernel)
参见几何建模内核(Geometric modeling kernel)
KML
锁眼标记语言(Keyhole Markup Language) - 一种Google Earth所用的基于XML的地理空间3D数据定义。FreeCAD此时还未支持KML。

L

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Label
1.  A user defined property of an object; used to make the Tree view easier to understand by humans.
2.  A string of descriptive text added to a drawing (see Draft Label).
Contrast with Name.
Line
Most often this is used as a synonym for a line segment. In Sketcher, it is used sometimes with its exact meaning of an infinite straight path.
Line Segment
A straight path between two points.
Lock
Constraint Lock
Loft
A topological form created by linking consecutive profiles with a surface. Similar to the process used to make fabric covered aeroplanes or boats. Also the FreeCAD function for creating such a form.


M

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Macro
A saved sequence of FreeCAD instructions, often written by end users.
Manifold
Said of a shape that forms a perfectly enclosed volume. A familiar synonym that gives a good description is "watertight". To generate a solid, a shell must be manifold.
Mantis
Bug tracking system used by the FreeCAD project.
Mesh
Type of object that can be imported or created by FreeCAD. See Polygon mesh for more details.
Model
Also called 3D model. Computer representation of a three-dimensional part or assembly.
MultiTransform
Stands for multiple transformation. A feature from the PartDesign workbench that applies a series of chained transformations (linear and circular pattern, mirrored) to selected features.


N

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Name
An unique identifier for a FreeCAD document object. Once assigned by the program, the Name can not be easily changed. Contrast with Label.
Non-manifold
Non-manifold topology, also called zero-thickness, is two distinct solid bodies connected at a theoretical vertex or edge. It is an unsupported type of shape (not always detected by FreeCAD) that should be avoided, as it can cause trouble with further steps and export.
Null Shape
A Shape property that has not been initialized by a program/macro. Usually an error condition.


O

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OCC
Acronym for Open CASCADE. Prior to being open sourced, it used to be named CAS.CADE (abbreviated from Computer Aided Software for Computer Aided Design and Engineering).
OCE
Open CASCADE Community Edition. It provides patches, improvements and experiments contributed by users over the official Open CASCADE library. FreeCAD is known to work on either OCC or OCE.
OCCT
Open CASCADE Technology. See OCC.
Open CASCADE
The geometric modeling kernel (software library) underlying FreeCAD. Also called OCC or OCCT (for Open CASCADE Technology). See also OCE.
OpenSCAD
1.  Name of a script-only based CAD program.
2.  A workbench in FreeCAD. The OpenSCAD workbench provides an interface for import/export of *.scad and *.csg models, as well as a some utility tools.
Origin
The center of the coordinate system. Everything goes out from here in either the positive or negative directions. As is our view of the universe with Earth being the “origin”.
Orthographic
See Orthographic projection and Multiview orthographic projection.


P

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Pad
An extension of a Sketch in a direction perpendicular to the plane of the Sketch. See also Extrude.
Part
1.  A FreeCAD workbench primarily used for a Constructive Solid Geometry workflow. See Part Workbench.
2.  A FreeCAD Python module, directly interfacing with OCC. See Part scripting.
3.  A container which groups any type of FreeCAD object and has a placement. See Std Part.
4.  A unibody solid. The lowest level component in an assembly.
PartDesignNext
Nickname used over the forums to distinguish the PartDesign workbench in the FreeCAD 0.17 release version from the one in v0.16 and earlier, because of the vast changes introduced.
PD
Abbreviation of PartDesign, a FreeCAD workbench.
PDN
Abbreviation of PartDesignNext.
Perspective
Perspective projection
Pivy
A software library that allows Python to use Coin.
Placement
Set of properties of an object that defines its coordinates and orientation in space. See Placement.
Planar
Said of geometry of which elements all lie on a same plane.
Plane
1.  A flat, two-dimensional surface that extends infinitely far.
2.  A primitive two-dimensional object created in the Part workbench.
Plot
1.  An outdated synonym for a technical drawing made by a pen plotter. See Plotter
2.  Short for plot plan. See Site plan
3.  Graphical representation of data. See Plot (graphics)
Pocket
A feature that removes material from a solid based on a Sketch.
Point
An item used to reference a single area in the 3D workspace. A “point” is dimensionless. It has a dimension on the screen, usually represented by a “dot” only so we can see where it is. See also Vertex.
Polygon mesh
See Polygonal_mesh
Polyline
A series of connected line or arc segments.
POV-Ray
POV-Ray
PPA
An acronym that stands for Personal Package Archive. It's a type of software repository exclusive to the Ubuntu Linux operating system. The FreeCAD project offers the latest release as well as development versions through two PPA repositories. Updates are managed by the host system's update manager.
Primitive
A basic shape used in the construction of models. Some 2D primitives are: point, line, polygon, circle, ellipse, spiral, helix. 3D primitives are: box, cylinder, cone, torus, sphere, ellipsoid, prism.
PySide
A freely available software library that allows Python to use QT.
Python
A programming language used in the development of FreeCAD as well as in user-written macros or scripts.


Q

Q

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Qt
一种跨平台的应用程序与用户界面接口框架。也作Qt5。

R

R

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Raytracing
光线追踪(Ray tracing),简作光追
Revolve
A tool in the Part workbench. See Part Revolve.
机器人(Robot)
工业机器人(Industrial robot)
旋转(Rotate)
令对象绕某轴旋转,以改变其位于空间的方向。

S

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Section
Cross section (geometry)
Self Intersection
A condition where a curve crosses over itself (ex.'8','&'). This confuses geometric kernel algorithms and generally produces an error condition.
Shape
Generic term used in FreeCAD to describe most elements (except for meshes).
Shell
Shape made of two or more contiguous faces. A manifold (enclosed) shell can be converted into a solid.
Sketch
A constrained 2D depiction of an object fixed to a plane or a Face. In FreeCAD a Sketch is always a 2-dimensional object somewhere in the 3D space.
Sketcher
A workbench used to create 2D geometry by use of elements and constraints.
Sketcher Solver
The internal FreeCAD mechanism that calculates inter-dependencies and effects of adding, deleting, and modifying geometry and associated constraints in each Sketch. Sketcher Solver also calculates the arrangement of all geometry in each Sketch so it can be displayed correctly.
Smooth Line
In a Drawing, a line indicating a change between tangent surfaces, as in the transition from a flat surface to a fillet. Also "tangent edge". See Drawing View
Solid
Part of 3D space bounded by Shells. A solid has a volume and other properties related to objects with a mass.
Solver
See Sketcher Solver.
Stable
A nickname for the last general release version of the FreeCAD software. This is typically the version available from sources other than the FreeCAD project. Compare with Unstable.
STL
STereoLithography, also known as Standard Tessellation Language. A mesh file format defining only the surface of a 3D object. File extensions is *.stl
STEP
An ISO standard (ISO 10303) for the exchange of 3D data and product manufacturing information. It replaces IGES. File extensions are *.step, *.stp.
SVG
Scalable Vector Graphics. A vector graphics file format.
Sweep
A 3D shape generated from at least one 2D cross-section that traces along a trajectory (path). Commonly used to define the tool as well as the created shape. See Solid modeling


T

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Task panel
A control panel in FreeCAD that displays content specific to the task at hand. It can show available tools in the active workbench or prompt for values and options while a command is active.
Tasks tab
See Task panel.
Tessellation
A tessellation of a surface is the tiling of the surface using one or more geometric shapes, called tiles, with no overlaps and no gaps. In FreeCAD it is needed to display the geometric shapes in the 3D-view. The tessellation relative to the dimensions of a shape can be set in the preferences to get a smoother view of round surfaces at the cost of computation time. See Preferences Editor.
Thickness
1.  A measure of how thick a shape is.
2.  A Part workbench tool to hollow out a solid and leave a defined uniform thickness.
Toggle
A setting that can be changed between two options, for example between True or False or between Off and On.
Topological Naming
A scheme whereby an edge or face, once created, is assigned a permanent name. Internally, FreeCAD identifies edges and faces on a solid by numbering them such as: Edge1, Edge2, Face1, Face2, etc. The problem is that these IDs are somewhat randomly applied, and they will change after something is done to the model that changes the amount of edges and faces. For example, if the model is revised an item linked to a Face2 could later erroneously become linked to a different face (which was renamed to become the new Face2), causing the user unwanted results. As of the FreeCAD 0.20 release Topological Naming has not yet been implemented, and so if an object is modified such that the number of edges or faces changes, the names of the edges or faces of that object might change too.
Torus
A primitive shape.
Tracker
Short for bug tracker, the online software application used to keep track of reported bugs or feature requests. See also Mantis.
Tree view
The Tree view is a component of the FreeCAD interface. It can be shown as a separate GUI element or as part of the Combo View. It contains a representation of the document's structure.


U

U

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并集(Union)
一种在所选形状上执行特定布尔运算零件工作台工具。
不稳定的(Unstable)
对FreeCAD软件最新版本的昵称。此版本中将包括开发者最近实现的许多变更内容。它通常不会出现错误或产生错误结果,但是却未经过完整的测试,因而有一定的风险。
Upgrade
一种草图 工作台工具。

V

V

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向量(Vector)
具有方向与大小的量。在2D与3D空间的图示中,常以带箭头的线段加以表示。例如,“向北走50步”、“向下9.8 m/s^2(重力加速度)”以及“在x、y、z方向分别为(3,5,6)个单位”皆为向量。在FreeCAD中,通常将向量表示为有序对(x, y)或有序三元组(x, y, z)。
顶点(Vertex)
空间中的单独点(point),或图形(shape)边(edges)间的交点。Open Cascade Technology将其定义为:对应于几何图形中点的零维图形(shape)。[参见OCCT Profile: Defining the topology]

W

W

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WB
工作台(workbench)的缩写。
连线(Wire)
1.  多个顶点(vertices)间的一系列连接边(edges)。此术语常用于Open Cascade Technology [[1]]之中,因此也用于FreeCAD。
2.  用于创建参数化连线的草图工作台(Draft workbench)命令。
工作台(Workbench)
又称模块(module),每个 工作台(workbench)囊括了处理某个特定任务的工具集。

X

X

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X
常指2D或3D坐标系中的X坐标轴(axis)

Y

Y

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Y
常指2D或3D坐标系中的Y坐标轴(axis)

Z

Z

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Z
常指3D坐标系中的Z坐标轴(axis)