DWR框架的引入实现了客户端与服务器端的异步数据通讯，提升系统的交互性，显著改善了用户体验；

The introduction of DWR framework, realizes client and server-side asynchronous data communication, enhances the system's interactivity and improves user experience significantly;

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在数据通讯中指呼叫用户的动作，或在产生呼叫时所需的操作，或由两个通讯站连接起来实现的有效使用。

In data communications, the action performed by the calling party, or the operations necessary in making a call, or the effective use made of a connection between two stations.

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