用户: user; subscriber; consumer; ...代理: act for实体: substance entity用户代理: a se agent; agent, user; edi-ua edi user agent edi; ua user agent; user agent (ua)用户代理（程序）: ua user agent用户代理层: ual user agent layer目录用户代理: dua directories user agent; dua directory user agent用户代理目录: directory user agent用户代理子层: ual user agent sublayer邮件用户代理: mail-user agent远程用户代理: rua remote user agent用户管理实体: ume user management entity目录用户代理程序: directory user agent; dua人际传信用户代理: ipm-ua inter-personal messeging user agent用户代理服务器: uas用户代理默认风格: user agent default styles用户代理设置文件: user agent profile报文传送代理实体: mtae message transfer agent entity话音消息系统的用户代理: vmgs-ua voice messaging system user agent两个主要元素是用户代理: user agent:ua请求的用户代理客户: user agent client:uac人际传信系统用户代理: ipms-ua inter-personal messaging system user agent响应的用户代理服务器: user agent server:uas用户代理协议数据单元: uapdu user agent protocol data unit用户网接口管理实体: uni management entity (ume)
