two phase lock 两段锁
We have mainly researched two FM signal demodulation techniques called Frequency Spectrum Separation and Phase Lock Loop in the first part.
一次解调中研究了频谱分离法和锁相法两种实现鉴频的技术。
The phase lock loop is a feedback control system that makes two telecommunication signals' phase synchronization, suitable to the synchronous trigger circuit of the convertor device.
锁相环路是完成两个电信号相位同步的反馈控制系统，适宜于变流装置的同步触发电路之中。
The construction completion project of the Three Gorges two-way five-step ship lock is an important component of the Three Gorges Phase III project construction.
三峡双线五级船闸完建工程是三峡三期工程建设的重要组成部分。
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