名词
中文翻译：中频
同义词：
['medium frequency', 'middle frequency例句：1. The radio waves are emitted from a midfrequency transmitter.（无线电波由一个中频发射器发射。）']
例句：
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1. The radio waves are emitted from a midfrequency transmitter.
无线电波由一个中频发射器发射。
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2.The midfrequency spectrum is used in radar systems.
中频谱在雷达系统中使用。
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3.The midfrequency noise was the most significant problem we encountered.
中频噪声是我们遇到的最大问题。