摘要
给出曲线的从切面上的直线——从切线构成的直纹面是可展曲面的充要条件．并根据曲线曲率、挠率的性质，得到几个结论．
The article puts forward a ruled surface formed by a straight line on the rectifying plane of a curve which is the full and essential condition of a developable surface,and makes a few conclusions according to the curvature of the curve and the nature of the torsion.
出处
《广西民族学院学报（自然科学版）》
CAS
1998年第3期10-11,共2页
Journal of Guangxi University For Nationalities(Natural Science Edition)
