... 潜孔钻机 Down hole drill 工程钻机 Engineering Drill 水平定向钻机 Hydraulic Directional Drilling Rig ...
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portable engineering drill 轻便工程钻机
Social Engineering Drill 社交工程演练
drill engineering 钻井工程
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In drilling engineering, drill pipe often sticks in salt formation because of wellbore shrinkage.
在钻井工程中，盐岩层井眼易发生缩径卡钻。
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He pioneered the oil trade with Russia, bartering drill pipe, petrochemicals and engineering services to the Soviet Union in exchange for crude.
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