双井抽油机机架
the frame of double-well pumping unit
复合平衡式抽油机
compound-balanced pumping unit
曲柄平衡式抽油机
crank-balanced pumping unit
双驴头游梁式抽油机
twin-horse head pumping unit
游梁式抽油机
moving beam typed oil suction pump
beam pumping unit
beam pumper
beam pumping units
Beam pump
beam-pump unit
Rocker-type oil pumping unit
Walking-beam Pumping Unit
travel-beam pumping unit
beam unit
Beam-balanced pump
Beam-pumping Unit
beam-pumped machine
大斜度抽油机井
highly-deviated pumping well
聚合物驱抽油机井
polymer flooding rod pumping wells
聚驱抽油机井
polymer flooding pump wells
直线电机抽油机
linear motor pumping unit
柴油机机油冷却器
diesel oil cooler
lube oil cooler for diesel engine