Analyzing the contents of the axonometric projection in textbook of Engineering Drawing, this paper points out the consistency problems of the relevant concept definition and application.

通过对制图教材中轴测投影部分的内容进行分析和研究，指出了其中有关概念定义及应用中存在的一致性问题。

youdao

The projection drawing of assembly has been a big headache for stu dents when learning techniques of geometry drawing and engineering drawing.

组合体的投影作图，一直是学生在学习画法几何和工程制图当中的一大问题。

youdao

Mastering basic principles of Orthographic Projection; knowing how to observe and analyze engineering objects using project methods;

掌握并应用正投影法的基本原理，学会运用投影法进行工程形体的观察。

youdao