记#Cent(G)为群G的所有互不相同的元素的中心化子个数.如果#Cent(G)=礼,则称G为n中心化子群.本文给出了9中心化子群的结构.
We use #Cent(G) to denote the number of different centralizers of group G. If #Cent(G) = n, we call G a n-centralizer group. In this paper, we determined the structure of 9-centralizer group.