Beam pumping unit
Oil field sceneãâ¬âBeam pumping unit, also called a crank balanced beam pumping unit, the beam pumping unit, refers to the beam, through linkage reversing, crank weight balanced pumping unit, commonly known as KeTouJi.
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Username: Zhengzaishanchu
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Width: 5616 pixels
Height: 3744 pixels
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Image ID: 44013497