13 Central projection method中心投影法 Central projection:When the lines of projection meet at a point, it is called central projection. 中心投影法： 投射线汇交于一点的投影法称为中心投影法。 Projection lines(投射线》 B Projection 投影 Object(物体) (Sight or center of projection 投射中心) Projection plane投影面 请点击鼠标左键显示后面内容 返回13