本文讨论了若干图类的四种不同的着色问题：动态着色、关联着色、平面图的完备着色和边面着色。

In this paper, four types of graph coloring are discussed: dynamic coloring, incidence coloring, entire coloring and edge - face coloring of planar graphs.

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本文在前人研究的面着色问题基础上，运用欧拉公式和握手定理通过解方程组得到连通平面图的面色数。

In this paper, Euler's formula and Handshaking lemma is used to obtain the face chromatic number of a planar graph by solving equations.

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着色检查：使用蓝色染料涂在模具，量规或者产品表面以检查平面、圆面或者锥面的工序。

BLUING / BLUE UP : Process of using blue dye to coat a surface of a master, gauge, or piece of product to check a flat, circular, or tapered surface.

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