锁相环路是一种能实现相位自动锁定的控制系统，主要用于频率合成及跟踪解调系统。

The phase- locked loop is one kind of control system which is able to achieve phase automatic lock, to compose frequency and to trace demodulation system.

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锁相环路是一种能实现相位自动锁定的控制系统，主要用于频率合成及跟踪解调系统。

The phase- locked loop is one kind of control system which is able to achieve phase automatic lock, to compose frequency and to trace demodulation system.

youdao