crank balanced beam pumping unit in a oilfield
Contributor: YuanGeng
ID : 237873486
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Keywords
asia, china, beam, crank, rotation, swing, equipment, facility, tool, machinery, building, drilling, rig, framework, metal, steel, solid, oil, natural gas, crude oil, fuel, energy, platform, industrial, mining, mineral, exploration, manufacturing, sky, colours, environment, technology, economy, nostalgia, traditional, power, transmission, promotion, dripped, drive, homework, red, blue, pipeline, eveningRelated items
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