名词
中文翻译：无线电调制器
同义词：
['radio oscillator', 'radio amplifier']
例句：
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1. The radio modulator is responsible for converting the signal from the transmitter to the desired frequency.
无线电调制器负责将发射机的信号转换为所需的频率。
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2. The radio modulator was designed to improve the signal quality during long-distance transmissions.
无线电调制器被设计用来改善远距离传输的信号质量。
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3. The engineer used a radio modulator to tune in to the broadcast station's frequency.
工程师使用无线电调制器来调谐到广播台的频率。