针对网络多媒体应用体系结构，分析了通用的轻型会话系统模型LWS和应用层组帧alf的设计原则。
Focus on architectures of networked multimedia applications, the light-weight sessions (LWS) and the application level framing (ALF) were analyzed in the paper.
本文分析了国内CAI应用的现状及发展趋势，提出了一个进行多媒体CAI的理想模型，即建立一个面向教学和管理的具有集成处理功能的计算机网络应用系统。
This paper analyses the situation and trend of development about the application of CAI in our country, then, poses an ideal model of multi-media CAI.
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