摘要
文章给出了可展曲面的两个新的等价条件,所得结论不但丰富了可展曲面特征的内涵,而且从本质上改进了近期有关文献中的结果,简化了其证明.
The paper gives two new equivalent conditions of developable surfaces. The results not only fill up the connotations of characteristic for developable surfaces but also essentially improve the results in recent papers as well as simplify it's proof.
出处
《淮北煤炭师范学院学报(自然科学版)》
2010年第1期13-14,共2页
Journal of Huaibei Coal Industry Teachers College(Natural Science edition)
基金
安徽省教育厅教学研究重点项目(2005056)
关键词
直纹曲面
可展曲面
曲率线
测地线
ruled surface
developable surface
curvature line
geodesic