名词
中文翻译：Unknown
同义词：
['降压放大器，降频放大器例句：1. The step-down amplifier is used to reduce the voltage of the input signal.（降压放大器用于降低输入信号的电压。）']
例句：
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1. The step-down amplifier is used to reduce the voltage of the input signal.
降压放大器用于降低输入信号的电压。
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2. The step-down amplifier was designed to improve the signal-to-noise ratio.
降压放大器被设计用来提高信噪比。
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3.The step-down amplifier was used in the circuit to amplify the weak signal.
降压放大器被用于电路中来放大弱信号。