crank balanced beam pumping unit in the JiDong oilfield, China.
Contributor: junrong
ID : 234037074
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Keywords
asia, china, beam, crank, rotation, swing, equipment, facility, tool, machinery, building, drilling, rig, framework, metal, steel, solid, natural gas, oil, 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, pipeRelated items
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