According to the different requirement for the mapping, many variations of graph labeling have been evolved.

而根据对映射的不同的要求，产生了各种各样的图的标号问题。

youdao

According to the different requirement for the mapping, many variations of graph labeling have been evolved.

而根据对映射的不同的要求，产生了各种各样的图的标号问题。

youdao