Extensible Clinical Protocol (XML-based clinical research protocols, eProtocols)可扩展的临床协议(基于xml的临床研究,eProtocols) Explicit Control Protocol明确控制协议 eXtended Copy Protection (First 4 Internet; UK)延长版权保护(第4网络;英国) Expendable Current Profiler目前进行的消耗品 Excellent Coverage Partner (spades gaming)优秀的覆盖率伙伴(黑桃游戏) Xavier College Preparatory (Phoenix, Arizona)沙维尔大学预科(亚利桑那州菲尼克斯) Extensible Communications Platform (Jabber)扩展通信平台(Jabber) eXtensible Content Protection可扩展的内容的保护 eXplicit Congestion control Protocol明确的拥塞控制协议 Universal measurement and Calibration Protocol普遍的测量和标定的协议 eXtended Copy Protection延长版权保护 Extendable Commercial Paper可扩展的商业票据