我将覆盖数，可用于不同的技术，其中包括一个我选择执行。

I will cover several different techniques that can be used including the one I've chosen to implement.

youdao

对一个图而言，满足此条件的最小的自然数即为此图的覆盖数。

The cover pebbling number for lexicographic product graphs and some strong product graphs were determined.

youdao

数世纪以来，许多人都对金星着迷，因为它有厚厚的云层覆盖——一颗所谓的神秘星球。

Many people have been fascinated about Venus for centuries because of its thick cloud cover—a so-called planet of mystery and all of that.

youdao