放大电路

amplifying circuit的用法和样例：

例句

The author briefly introduces some kinds of sensors and deals with structure and signal-amplifying circuit,and goes into details on new sensors.扼要介绍几种传感器的结构及信号放大电路，并着重提出一种新型传感器，对其工作原理及其结构进行重点阐述。

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