接着分析了当前最为流行的三种多媒体同步模型，指出了其优缺点。
Then we analyze three most popular multimedia synchronistic models and point out their advantages and disadvantages.
针对现有的几种多媒体文件模型中的对象同步问题进行了探讨，主要分析了其中多媒体对象同步模型的同步机理。
Discusses the object synchronization problem of several existing multimedia document models, and analyses mostly the synchronization principle of each multimedia object synchronization model.
提出了用线性表实现多媒体表现同步模型的方法。
We propose the method of realizing multimedia representation synchronization models with linear table.
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