... drilling boring and slotting milling machine钻镗插铣床 drilling centralizer钻井定心器 drilling dynamometer钻削测力仪 ...
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... centralizer sub 扶正器接头 ner centralizer 衬管扶正器 drilling centralizer 钻井扶正器 ...
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drilling rod centralizer [地质] 钻杆定心器
drilling g centralizer 钻井定心器
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The design of centralizer assembly is the basic and key job for directional drilling.
扶正器组合设计是钻定向井基本而关键的工作。
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