利用斜投影法求解截交线和相贯线的投影

Solving the Projection of Cross-section Curve and Intersection Line by Using the Method of oblique Projection

运用斜投影法，求解截交线及相贯线的投影，使解题较为方便，比现行制图教材中讲授的解题方法更加简练。同时能启发学生思路，增强画法几何的解题能力。

A new kind of solution-the method of oblique projection,is introduced in detailfor solving the intersection line and cross- ention curve.It is easier and more simplethan that is in-troduced in the present drawing textbooks. Besides t can also inspire students'thinking so as to im-prove their ability to solve the deseriptive geometry.