4100直喷式柴油机
4100 direct injection diesel engine
液压抽油机
hydraulic pumping unit
hydraulic pumping units
Hydraulic oil pumping units
摇块机构抽油机
beam rocker structure pumping unit
涡流室式柴油机
Swirl chamber diesel engine
swirl chamber engine
Swirl-chamber Diesel Engine
Diesel Engine with Turbulence
涡烈式柴油机
swirlchamber diesel engine
天平式游梁抽油机
balance-type beam pumping unit
随动复合平衡抽油机
servo compound balance beam pumping unit
双驴头游梁式抽油机
twin-horse head pumping unit
双驴头抽油机
double donkey headed oil suction pump
柔性抽油机
the flexible pumping unit
热球式柴油机
hot bulb engine
hot hulb engine
hot surface ignition engine
曲柄平衡式抽油机
crank-balanced pumping unit