Second, deep-well pump.

深井泵。

youdao

The sand control of oil well pump is very important for drilling-production system.

抽油泵防砂是钻采系统防砂的一个重要环节。

youdao

The sand control of oil well pump is very important for drilling-production system.

抽油泵防砂是钻采系统防砂的一个重要环节。

youdao