从消除信号阻塞到进程执行下一个指令之间，必然会有时钟周期间隙，任何在此时间窗口发生的信号都会丢掉。
There has to be some gap of clock cycles between the unblocking of signals and the next instruction carried by the process, and any occurrence of a signal in this window of time is lost.
在规划和优化通信网络的过程中，需要消除信号盲区，因此研究电波传播损耗就成为一个重要的课题。
In the process of marking out network, it need to avoid the existence of no-signal areas.
作者认为利用程控放大器消除光栅信号缺陷的方法，可有效消除信号的幅值不稳定和直流电平漂移，并对信号的可调节范围及精度作了定量分析。
A method which can be used to eliminate the defects of the grating signal has been discussed. The controllable range and accuracy of the signal has been calculated.
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