名词
中文翻译：阶梯衰减器
同义词：
['stepped attenuator', 'stepped attenuation', 'step-down attenuator']
例句：
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1.The engineer used a stepped attenuator to reduce the noise level in the audio signal.
工程师使用一个阶梯衰减器来降低音频信号中的噪声水平。
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2.The stepped attenuator was designed to improve the signal-to-noise ratio of the system.
阶梯衰减器被设计用来提高系统的信号与噪声比。
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3.The stepped attenuator was used in the transmission line to prevent interference from external sources.
在传输线路中使用了阶梯衰减器，以防止外部干扰。