说明：  本论文的题目是《基于网络的视频通讯系统》，即论述了我做的软件“基于网络视频通讯系统”的设计过程，原理以及实现。
(This paper is entitled " Web-based video communications systems" , that is what I do on the software " Web-based video communication system," the design process, as well as the realization of the principle.)