虽然联邦服务器可以弥补数据服务器上的功能缺失，但这要求操作发生在联邦服务器上。

The federated server can compensate for the lack of function at the data server, but doing so might require the operation to take place at the federated server.

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补数键控的新版本为你的工具箱增加电容器、感应器和交流电压源！现在你可以画出和时间形成函数关系的电流和电压。

This new version of the CCK adds capacitors, inductors and ac voltage sources to your toolbox! Now you can graph the current and voltage as a function of time.

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