However, someone thinks that the optimum oil recovery mode of Lunnan oilfield should be hydraulic piston pump.

但有人对此提出了不同意见，认为该地区的机械采油应首选水力活塞泵。

youdao

However, someone thinks that the optimum oil recovery mode of Lunnan oilfield should be hydraulic piston pump.

但有人对此提出了不同意见，认为该地区的机械采油应首选水力活塞泵。

youdao