投影面是物体投影所在的假想面。通常是平面，但在地球投影等方面也应用圆柱面、圆锥面和球面等曲面作为投影面。
投影面(Projection plane) 投影线(Projection lines) ※以正投影(Orthographic Projection)原理,即「投影线互相平行且垂直投影面,使用一个投影面,将物体歪...
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...投影 (Projection)，点S为 投影中心(Projection center)，点A为投影体 (Object of projection)， P为投影面(Plane of projection)，直线SA为 投射线(Incident line)。
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... projecting line 投射线 projecting plane 投影面 projecting cylinder 射影柱,投射筒...
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水平投影面 horizontal plane ; Horizontal projection plane ; horizontal plane of projection ; top plane
投影面积 [测] projected area ; area of contour ; area of projection
垂直投影面 vertical plane ; vertical projecting plane ; vertical plane of projection
辅助投影面 auxiliary plane ; auxiliary plane of projection ; secondary plane of projection ; auxiliary projection plane
轴测投影面 plane of axonometric projection
正投影面 frontal plane of projection ; frontal projection plane
叶片投影面积 [动力] projected area of blade ; leaf projection area
侧面投影面 profile plane of projection
铸件投影面积 Projecting area of casting
工作投影面为赤道平面―相当于地平面。
The working projection plane is taken at the equatorial plane corresponding to the ground surface.
视图是按正投影法即零件向投影面投影得到的图形。
Orthography of the view is based on the projection plane projection parts are the graphics.
它用绘图仪器绘画，三主要轴线与投影面所成的角相等。
Drawing instruments sre used to make the drawing in which the three principal axes make equal angles with the plane of projection.
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