DCDL:分布式控制描述语言，能以语言的方式完成对并发、进程间通信与同步和容错这3个基本功能的无二义的表达能力-DCDL: Distributed Control descr iption language, the language the way to completion of the complicated, inter-process communication and synchronization, and fault-tolerant three basic functions

TCP（传输控制协议）是一种面向连接的、可靠的传输层协议。TCP协议在网络层IP协议的基础上，向应用层用户进程提供可靠的、全双工的数据传输流。-TCP (Transmission Control Protocol) is a connection-oriented, reliable transport layer protocol. TCP protocol in the network layer IP protocol based on the user process to the ap