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... drill rig架式钻机 drill rod connecting hoop钻杆接箍 drill rod padding fork钻杆垫叉 ...
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... drill pipe clamp 钻杆夹持器 drill pipe coupling 钻杆接箍 drill pipe electric log 钻杆电测井 ...
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... drill rod 钻杆 drill rod coupling 钻杆接箍 drill rod subs 钻杆评论申辩 ...
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drill rod coupling
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