amplitude spectrum

例句：

1. 1. The amplitude spectrum of the signal is used to determine its frequency content.
   信号的振幅谱用于确定其频率内容。
2. 2.In the amplitude spectrum, the peaks represent the maximum values of the signal.
   在振幅谱中，峰代表信号的最大值。
3. 3. The amplitude spectrum of the waveform shows the distribution of energy across the frequency range.
   波形的振幅谱显示了能量在频率范围内的分布。