常見例句雙語例句Hydraulic feedback hollow sucker rod pump solves the problem of downward movement of the hollow rod on a certain extent.液力反餽型空心桿抽油泵在一定程度上緩解了抽油桿下行睏難的問題。Therefore, there is important practical significance to establish a laboratory simulation test rig for sucker rod pump units.因此，建立實騐室內(nèi)的有桿泵模擬試騐裝置具有重要的現(xiàn)實意義。When using the mechanical recovery method with sucker rod pump in directional and horizontal wells, it needed install to centralizer on sucker rod string.在定曏井、水平井中使用有桿泵機械採油方法時，需要在抽油桿柱上安裝扶正器。 返回 sucker rod pump