利用O’Nan-Scott定理刻画了3次自由次的拟本原置换群和二部拟本原置换群,并给出了一般3次自由置换群的描述.
It is given that a Characteristic of the'quasiprimitive and bi - quasiprimitive permutation groups of cube free degree by using O' Nan - Scott theory, and the general groups of cube free degree are descripted.