·2,447,543篇论文数据，部分数据来源于NoteExpress
The relationship between the oblique line and every projection plane included Angle, and It's application on problems proposed and solved were discussed in the paper.
本文论述了一般位置直线与各投影面的夹角相互关系问题及其在命题、解题方面的应用。
youdao
应用推荐
模块上移
模块下移
不移动