The XAT series all-weather applied TV is briefly discussed and some major points about its technology are explained in this paper.

文章对XAT系列全天候应用电视系统进行了简述，并对一些主要技术问题作了说明。

The minimum number of colors required for an adjacent vertex-distinguishing total coloring of a simple graph G is called the adjacent vertex-distinguishing total chromatic number, denoted by xat(G).

若一个正常全染色其相邻顶点的色集不同时，就称之为邻点可区别全染色，邻点可区别全染色所用颜色的最小数称为邻点可区别全色数。