of;
Mathematical;
and;
Information;
Science,;
Shandong;
Institute;
of;
Business;
and;
Technology,;
Shandong;
264005,;
P.;
R.;
China;
of;
Mathematical;
Sciences,;
University;
of;
Science;
and;
Technology;
of;
China,;
Anhui;
230026,;
P.;
R.;
China;
S-拟正规子群; 极大子群; 有限群; HG; 超中心; 群结构;