orientable surface造句

例句与造句

1. A note on strong embeddings of maximal planar graphs on non - orientable surfaces
   极大平面图在不可定向曲面上强嵌入的一个注记
2. Maximum genus of graphs is a characteristic parameter , which determines a graph whether has a 2 - cell embedding in a . certain orientable surface
   图的最大亏格是刻划图在某个定向曲面上是否有2 -胞腔嵌入的一个特征参数。
3. It's difficult to find orientable surface in a sentence. 用orientable surface造句挺难的