Unlike Seam's remote calls, however, the JSF life cycle is active during an asynchronous Ajax4jsf request, hence the need for a servlet filter rather than a regular servlet.

与 Seam 的远端调用不同，JSF 生命周期在 Ajax4jsf 异步请求过程中 是活动的，因而需要 servlet 过滤器而非常规的 servlet。

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The next example is of a specific filter for Active Directory that explains the mapping in more detail.

下一个示例是关于Active Directory的特定筛选器，该示例详细地介绍了映射。

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Active power filter is a new power electronic plant restraining harmonic and compensating reactive power.

有源电力滤波器是一种用于动态抑制谐波，补偿无功的新型电力电子装置。

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