WU Ming_zhu. A Solution to a Drafting Problem by Hypothetical Exchange[J]. Journal of Civil and Environmental Engineering, 1999, 21(4): 96-97. DOI: 10.11835/j.issn.1674-4764.1999.04.020.
用假想变换解决一个作图问题
摘要
提供一种解决圆环形弯管与椭圆锥形管道相交问题的作图方法。
Abstract
This paper proposes a drafting method for solving the intersection between circular elbow and elliptical conic pipe
which remains to be solved up to now and has not been mentioned in any textbooks.