名词
中文翻译：振幅
同义词：
['magnitude', 'range', 'amplitude of a signal']
例句：
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1. Thesound of the bell has an amplitude of 20 decibels.
钟声的响度为20分贝。
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2.The amplitude of the wave is directly proportional to its frequency.
波的振幅与频率成正比。
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3. The amplitude of the current is measured in milliamperes.
电流的振幅以毫安为单位测量。