常用术语(英汉对照)投影 projection投影中心 center of projection投影面 projecting plane投影线 projecting line中心投影法 perspective projection平行投影法 parallel projection斜投影 oblique projection正投影 orthographic projection正投影面 frontal plane of projection侧面投影面 profile plane of projection投影图 projection drawing三面投影图 three-plane projection drawing投影轴 axis of projection投影特性 characteristic of projection不变性 characteristic of true积聚性 characteristic of concentration类似性 characteristic of similarity视图 view三视图 three-view drawing正面 frontal plane正面投影 frontal projection水平面 horizontal plane水平投影 horizontal projection侧面 profile plane侧面投影 profile projection主视图 frontal view俯视图 top view左视图 left side view立体 solid平面立体 plane body曲面立体 body of curved surface回转面 surface of revolution棱柱 prism棱锥 pyramid边 side顶点 center vertex棱 edge点 point直线 line strai