By using a wave generator, the self -exciting pressure waves can be generated when well pumping unit works.

抽油井正常工作时，借助波动器可在井底产生自激压力波。

youdao

By using a wave generator, the self -exciting pressure waves can be generated when well pumping unit works.

抽油井正常工作时，借助波动器可在井底产生自激压力波。

youdao