Terms containing user class

Subject	English	Chinese
busin.	international user class of service	国际用户业务类别
tech.	user class	用户级
el.	user class character	用户等级字符
IT	user class	用户类
el.	user class character	用户类别字符
avia.	user class	用户等级
avia.	user class identifier	用户类别标识符
IT	user class of service	用户服务级别