amplitude of wave form

例句：

1. 1. The sound of the piano has a significant amplitude.
   钢琴的声音有显著的振幅。
2. 2. The waveform has a high amplitude, indicating strong energy.
   波形振幅高，表示能量强。
3. 3. The amplitude of the signal is measured in decibels.
   信号的振幅以分贝为单位测量。