The beginning of a subgroup is identified by an h2 element.

子组的开始部分由h 2元素定义。

youdao

Each subgroup contains exactly one idempotent, namely the identity element of the subgroup.

每个子群精确的包含一个幂等元，也就是这个子群的单位元。

youdao

Each subgroup contains exactly one idempotent, namely the identity element of the subgroup.

每个子群精确的包含一个幂等元，也就是这个子群的单位元。

youdao