投影 projection

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1、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thre

2、e-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horizontal

3、projection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

4、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intersecti

5、on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

6、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cut

7、tingplanemethod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sec

8、tionalview,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