名词
中文翻译：调制器
同义词：
['modulation', 'modulatory', 'tuning device例句：1. The radio is a modulator that changes the frequency of the waves it receives.（收音机是一个调制器，它改变它接收到的波的频率。）']
例句：
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1. The radio is a modulator that changes the frequency of the waves it receives.
收音机是一个调制器，它改变它接收到的波的频率。
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2.The satellite communication system uses a modulator to convert digital signals into radio waves.
卫星通信系统使用一个调制器将数字信号转换为无线电波。
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3. The modulator in the receiver is responsible for converting the received signal into an usable format.
接收器中的调制器负责将接收到的信号转换成可用格式。