名词
中文翻译：时间谐波
同义词：
['time-harmonic', 'time-dependent harmonic', 'time-varying harmonic']
例句：
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1. The waveform of the signal is a time harmonic.
信号的波形是一个时间谐波。
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2. The frequency of the signal is determined by its time harmonic.
信号的频率由其时间谐波决定。
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3.The time harmonics of the signal are used to analyze its properties.
信号的时间谐波被用来分析其性质。