直角坐标轴                     rectangular coordinate axes

直角坐标(体系)              rectangular coordinate system

X轴                                 X-axis

Y轴                                 Y-axis

Z轴                                 Z-axis

{dy}象限                       first quadrant

第二象限                       second quadrant

第三象限                       third quadrant

第四象限                       forth quadrant

三维空间                       three dimensional space

{dy}角画法                     first angle method

第三角画法                     third angle method

投影法                         projection method

投射中心                       projection centre

投射线                         projection line

投影面                         projection plane

投影轴                         projection axes

中心投影法                     central projection method

平行投影法                     parallel projection method

正投影法                       orthogonal projection method

正投影(图)                     orthogonal projection

斜投影法                       oblique projection method

斜投影(图)                     oblique projection

三面投影图                     three–projection drawing

45°斜线                        45° oblique line

正投影面                       frontal plane (or V-plane)

水平投影面                     horizontal plane (H-plane)

侧立投影面                     profile plane (or W-plane)

主(前)视图                     front (main) view

俯(平、顶)视图                 top (plan) view

侧(端)视图                     side (end) view

左视图                         left view

右视图                         right view

仰视图                         bottom view

后(背)视图                     rear view

点                             point

端点                           end point

直线                           straight line

垂直线                         vertical line

正垂线                         V-perpendicular line

铅垂线                         H-perpendicular line

侧垂线                         W-perpendicular line

平行线                         parallel

正平线                         frontal line

水平线                         horizontal line

侧平线                         profile line

一般位置直线                   general-position line

平面                           plane (flat)

水平面                         horizontal (level) plane

正平面                         frontal plane

侧平面                         profile plane

垂直面                         vertical plane

正垂面                         V-perpendicular plane

铅垂面                         H-perpendicular plane

侧垂面                         W-perpendicular plane

一般位置平面                   general plane

倾斜面                         skew (oblique ) plane

夹角                           included angle

实长                           true length

实形                           true shape

实际距离                       true distance

判别可见性                     distinguish the visibility

重影(合)点                     coincident point

投影特性                       characteristics of projection  

直线性                         linearity

垂直性                         verticality

平行性                         parallelism

类似形                         similar shapes

积聚性                         accumulation

聚为一点                       converge

从属性(关系)                   affiliation

点在线上                       points on lines

线在面上                       lines in planes