名词
中文翻译：发射器
同义词：
['transmit', 'transmitter', 'sender例句：1. The device is a transmitter that sends signals through the air.（这个装置是一个通过空气发送信号的发射器。）2. The transmitter was used to send radio signals across the country.（发射器被用来在全国范围内发送无线电信号。）']
例句：
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1. The device is a transmitter that sends signals through the air.
这个装置是一个通过空气发送信号的发射器。
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2. The transmitter was used to send radio signals across the country.
发射器被用来在全国范围内发送无线电信号。
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3. The transmitter is responsible for converting electrical signals into sound waves.
发射器负责将电信号转换为声波。