名词
中文翻译：Unknown
同义词：
['Amplitude Modulation (AM)', 'Frequency Modulation (FM)']
例句：
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1. The radio station uses AM to broadcast its news.
该广播电台使用AM来广播新闻。
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2. The satellite signal is transmitted using FM.
卫星信号通过FM传输。
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3.The engineer needs to adjust the AM and FM levels to optimize the transmission.
工程师需要调整AM和FM水平以优化传输。