Three-View of Component物体的三视图 1.Form of three-view drawings 三视图的形成 A plan of an object is not always sufficient to describe it completely. 仅有物体的一个投影不能确定 它的空间形状。 How shall we do it？ 如何解决？ Single orthographic projection 单面正投影 Additional orthographic views can be drawn to sufficiently describe an object.It is necessary to use multiple views in engineering drawings 为了确定物体的空间形状，需要增加投影面。故在工程图 样中多采用多面视图。 靖点击鼠标左健显示后面内容5 Single orthographic projection A plan of an object is not always sufficient to describe it completely. 仅有物体的一个投影不能确定 它的空间形状。 Additional orthographic views can be drawn to sufficiently describe an object. It is necessary to use multiple views in engineering drawings