名词
中文翻译：副载波振幅
同义词：
['subcarrier modulation', 'subcarrier modulation']
例句：
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1. The subcarrier beat was used to synchronize the receiver with the transmitter.
副载波振幅被用来同步接收器与发射机。
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2. In digital communication, subcarrier beat is a technique used to enhance signal quality.
在数字通信中，副载波振幅是一种用于提高信号质量的技术。
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3. The subcarrier beat method is more efficient than other frequency-division multiplexing methods.
副载波振幅方法比其他频分复用方法更高效。