By, we prove that a separative Abelian regular ring is an APT ring.

由，还证明了分离的阿贝尔正则环是APT环。

The ellipse rotating symmetric group is proposed, which is an Abelian group.

提出椭圆旋转对称群，它是一个单参数阿贝尔群。

In this paper, the finite non-nilpotent group with every non-abelian subgroup being subnormal is investigated.

研究了每一非交换子群皆为次正规的有限非幂零群的结构。

Let R be an abelian ring ( all idempotents of R lie in the center of R), and A be an idempotent matrix over R.

设R是一阿贝尔环（R的所有幂等元都在中心里），A是R上的一幂等阵。

For the latter, we obtain the linear estimation of the number of isolated zeros of the corresponding Abelian integral.

对于另一类得到了其相应的阿贝尔积分的孤立零点的估计。