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1·A gating circuit that produces an output signal only if one of several possible combined input signals is received.

一种门式电路，只有几个可能汇集的输入信号之一被接收时，电路才输出信号。

2·This article provides the signal-to-noise ratio module of the range-gating photon counting system and discusses the synchronization between the laser echo wave and the detector gate.

本文给出了距离选通光子计数系统的信噪比模型并讨论了激光回波与探测器选通门之间的同步问题。