message bus信息总线messagen.消息；信息；要点；寓意v.传递信息；通讯message transmission procedure报文传输过程message transmitting procedure消息传输过程Message Processing Data System信息处理数据系统Message Data Exchange Terminal电报数据交换终端message diversion relay system电报转接中继系统message switching of telegraph电报报文交换message transmission mechanism消息机制message transmission subsystem信息传输子系统message switching data service报文交换数据服务message discrimination process信息鉴别过程