Well, I claim this curve actually bounds another surface that is orientable.
我断言这条曲线，界定了另一个可定向的曲面。
There's no way to choose consistently a normal vector for the Mobius strip So, that's what we call a non-orientable surface.
为Mobius带选一个始终如一的的法向量是不可能的,这就是所谓的不可定向的曲面。
This paper establishes some formulas on orientable closed surfaces in 3-dimensional space forms.
本文建立关于三维空间型中的可定向闭曲面的某些公式。
Integral absolute mean curvature is introduced to describe average curving of an orientable closed surface.
引入积分绝对平均曲率来描述可定向闭曲面的平均弯曲程度。
In this paper, the lower bound problems of the maximum genus and the genus distributions of digraphs in orientable surfaces are studied.
本论文主要研究了图的最大亏格的下界问题以及有向图类在可定向曲面上嵌入的亏格分布。
In this paper, the lower bound problems of the maximum genus and the genus distributions of digraphs in orientable surfaces are studied.
本论文主要研究了图的最大亏格的下界问题以及有向图类在可定向曲面上嵌入的亏格分布。
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