详单 meaning in Chinese

cdr

Considering on various aspect , such as cdr satellite telephone system maintenance , management , construction and statistics , this system provides telephone charge detail query and expense analysis function for the existed cdr satellite telephone system as well as provides prepay card telephone charge detail query function for charging center and provides analysis function of each local network and county bureau for administrative office
该系统从cdr卫星电话系统维护、话费管理、建设、统计等多方面考虑,为现有cdr卫星电话系统提供话费详单查询、费用分析功能,为计费中心提供预付费卡电话的话费详单查询功能以及为管理机构提供各本地网、县局话费的分析功能。