first and second stage. The time domain waveform Fig shows that the AE signals are的翻译：first and second stage. The time domain waveform Fig shows that the AE signals are 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

第一和第二阶段。时域波形图显示，AE信号

first and second stage. The time domain waveform Fig shows that the AE signals are

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first and second stage. The time domain waveform Fig shows that the AE signals are