名词
中文翻译：传输频率转换器
同义词：
['transmitting converter', 'transmitter', 'transducer']
例句：
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1. Thedevice is designed to transmit high-frequencysignals over long distances.
该设备设计用来在长距离内传输高频信号。
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2. Theengineer used a transducer to measurethe temperature of the liquid.
工程师使用了一个换能器来测量液体的温度。
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3. The transducer was crucial in the development ofmodern communication systems.
换能器在现代通信系统的发展中起到了关键作用。