名词
中文翻译：频率变换器
同义词：
['frequencies', 'frequency modulator例句：1. The frequency changer in the lab is responsible for adjusting the frequency of the radio waves.（实验室里的频变器负责调整无线电波的频率。）']
例句：
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1. The frequency changer in the lab is responsible for adjusting the frequency of the radio waves.
实验室里的频变器负责调整无线电波的频率。
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2. The frequency changer was designed to improve the signal-to-noise ratio of the communication system.
频变器的设计目的是提高通信系统的信噪比。
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3. The frequency changer was used to tune into different channels on the radio.
频变器被用来调谐到收音机的不同频道。