The theories and realizing method about X - band optical - link system are also discussed in chapter 5.
波段光收发系统的相关理论及实现方法也是重点论述对象.
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At the receiving end of asynchronous serial data link system, the receiver continually monitors the line.
异步串连数据链系统的接收终上, 接收器会不断监视着线路.
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