The conceptual model of actions was intentionally made general enough to accommodate both data-flow and control-flow computing models.
动作的概念上的模型被特意的普通化，从而提供数据流和控制流计算模型。
In general, servlet filters are used to control the flow of the application based on user type (or authentication and authorization) or page functionality.
通常，基于用户类型(或身份验证和授权)或页面功能将servlet过滤器用于控制应用程序流。
Under normal circumstances should be set in the first mesh upstream flow turning point, the water before near the river, you can control the mainstream, play a role in the light of its general trend.
一般情况下第一格宾网应该布置在水流转折点的上游，使水流在没有靠近河岸之前，就能控制住主流，起到因势利导的作用。
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