BASIC program for the face graph has been set up in this paper.

本文设计了一套脸谱图分析的BASIC应用程序。

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Clearly each plane graph has exactly one unbounded face.

显然，每个平面图都有一个无界面。

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Clearly each plane graph has exactly one unbounded face.

显然，每个平面图都有一个无界面。

youdao