multiply connected surface 多重连通面
simply connected surface 单连通曲面
Simply Connected Surface Coordinates 单连通曲面坐标系
doubly connected surface [数] 双连通面
Multiple Connected Surface Coordinates 复连通曲面坐标系
simply connected Riemann surface 单连通黎曼面
Surface Connected Cracking 焊缝表面开裂
Any object with a simply connected surface can be smoothed out to look like a sphere.
任何具有单连通表面的物体都能简化成一个球体。
In this example, the surface is not simply connected and any smoothed-out object looks like a torus with at least one hole.
在这个例子里,圈饼表面就是非单连通的,并且这类物体的简化就会像是至少有一个洞的曲面。
OK, so that's the definition of the surface of a sphere being simply connected.
这就是球面上,对单连通的定义。
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