By, we prove that a separative Abelian regularring is an APT ring.
由，还证明了分离的阿贝尔正则环是APT环。
2
In addition, the baby in the urine or when walking with his left foot on the section of the regularring, I do not know whether or not this normal?
另外，孩子在把尿或者抱着走动时，左脚经常有关节响，不知道这正常与否？
3
Next, the concept of graded semiflat module is introduced and proved that K is a group-graded weakly regularring if and only if all right K-module is graded semiflat module.