摘要
在微分几何范围内研究曲面上平点邻近的结构,得到五种不同的类型:1)单碗底型;2)双碗底对顶型;3)峰谷相对型;4)峰峰、谷谷相对型;5)平面型。
This paper discussed the structure of neighbor of a planar point on a surface in differential geometry,as a result five following types are obtained: 1)The type of bowl bottom.2)The type of bottom to bottom of both bowls.
3)The type of peak to gorge.4)The type of peak to peak,gorge to gorge. 5)The type of planar.
出处
《辽宁师范大学学报（自然科学版）》
CAS
1991年第2期154-157,161,共5页
Journal of Liaoning Normal University:Natural Science Edition
关键词
曲面
平点
法截线
a planar point on a surface
normal section
