文中相应介绍了各模块的工作原理。

And the working principles of these modules are also presented in this paper.

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分别介绍了各模块的工作原理，并对故障诊断模块进行了详细的分析。

The operational principles of these modules are discussed respectively in this paper. And the fault diagnosis module is emphasized.

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然后分析了锁相环中各个模块的工作原理以及它们对锁相环输出的影响。

Then some analyses are followed on the operation principle of each blocks and their influence on the PLL output signals.

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