投影 projectionVIP免费

投影projection投影中心centerofprojection投影面projectingplane投影线projectingline中心投影法perspectiveprojection平行投影法parallelprojection斜投影obliqueprojection正投影orthographicprojection正投影面frontalplaneofprojection侧面投影面profileplaneofprojection投影图projectiondrawing三面投影图three-planeprojectiondrawing投影轴axisofprojection投影特性characteristicofprojection不变性characteristicoftrue积聚性characteristicofconcentration类似性characteristicofsimilarity视图view三视图three-viewdrawing正面frontalplane正面投影frontalprojection水平面horizontalplane水平投影horizontalprojection侧面profileplane侧面投影profileprojection主视图frontalview俯视图topview左视图leftsideview立体solid平面立体planebody曲面立体bodyofcurvedsurface回转面surfaceofrevolution棱柱prism棱锥pyramid边side顶点centervertex棱edge点point直线linestraightline棱锥台truncatedpyramidfrustumofpyramid重影coincidenceofprojection积聚concentrate变形deformation实长truelength实形trueshape正平线frontalline水平线horizontalline侧平线profileline一般位置直线obliqueline铅垂线verticalline,frontal-profileline正垂线horizontal--profileline侧垂线frontal-horizontalline一般位置平面obliqueplane相交intersection平行parallel垂直perpendicular交线intersectingline,lineofintersection交点pointofintersection平行线parallelline垂直线perpendicularline交叉线skewline长度length宽度width高度height组合体complex基本几何体basicbody相接built-up相交intersection相切tangent相贯penetration支架brace底板bottomboard肋rib支承板bearingplate轮廓线outline,contourline底图traceddrawing截平面cuttingplane截交线lineofsection二重性dualnature平面曲线planecurve圆弧arc椭圆ellipse长轴majoraxis短轴minoraxis双曲线hyperbola抛物线parabola圆circle圆锥顶conicapex相贯体intersectingbodies相贯线lineofintersection空间曲线spacecurve截平面方法cuttingplanemethod辅助面auxiliarysurface辅助平面auxiliaryplane最高点culminatingpoint尺寸Size定形尺寸sizedimension定位尺寸locationdimension左视图rightview后视图rearview,backview仰视图bottomview辅助图auxiliaryview局部视图partialview,brokenview斜视图obliqueview旋转视图revolvedview,alignedview剖视图sectionalview,section全剖视fullsection半剖视halfsection局部剖视图partialsection,broken-outsection斜剖视图obliquesection旋转剖视图alignedsection阶梯剖视echelonsection,offsetsection复合剖视compoundsection剖面图section,sectionalview重合剖面coincidesection,revolvedsection移出剖面removedsection剖面线sectionline剖面符号symbolsforsection-lining习惯画法conventionaldrawing局部放大图drawingofpartialenlargement零件图detaildrawing,workingdrawing第三角投影thirdangleprojection粗实线continuousthickline,fullline,visibleline细实线continuousthinline虚线dotline,dashedline,hiddenline点划线dashanddotline双点划线doubledotsline波浪线breakline断裂线剖切平面迹线cuttingplaneline尺寸线dimensionline尺寸界线extensiontine尺寸dimensionsize箭头arrowhead基准datum基准线datumline基准面datumplane中心孔centralhole中心距centerdistance轴shaft,axle孔hole斜孔inclination装配图assemblydrawing性能尺寸characteristicdimension大小尺寸sizedimension总体尺寸outerdimension外形尺寸配合尺寸fitdimension内圆角fillet外圆角round尖角sharpcorner倒角chamfer轮缘flangeofwheel缘、边、环rim轴肩shoulder凸台boss凹坑concavepit轴颈shaftneck轮毂hub轮辐spoke,spokeofwheel直纹滚花straightknurlings网纹滚花hatchingknurling键槽key-way退刀槽escape拔模斜度patterndraft填料盒glandbox油槽oilgroove油封oilseal标准件standardparts螺纹threa...