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Terms for subject Drilling containing Special | all forms | exact matches only
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special baffle tool特殊挡圈
special closing plug特种封闭塞注水泥用套管附件
special core analysis专门岩心分析
special derrick特殊井架
special derrick face特殊井架外侧面
special material专门器材
special material特殊材料
special method专门方法
special method特殊方法
special plug cementing head专用水泥栓塞头
special purpose electronic compute专用电子计算机