This system regards PSTN as communication channels and realizes data long-distance transmitting, saving and processing.

本系统以公用电话网作为通信信道，实现水情数据的远距离传输、存储和处理。

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The backing bean delegates add event request processing to the EventServiceEJB Stateless Session bean, and delegates listing and saving events to an EventService implementation.

支持Bean将添加事件请求处理工作委托给无状态会话Bean EventServiceEJB，并将列表和保存事件委托给一个EventService实现。

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In this case, the component tree should have been constructed and saved during the processing of a previous Faces request (see the sidebar on state-saving methods).

在这种情况下，此组件树应该在处理之前的Faces请求期间构造和保存(参见侧栏状态保存方法)。

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