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Terms for subject Earth sciences containing 钻头 | all forms | in specified order only
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中间层钻井用牙轮钻头供应supply of rock bits for intermediate drilling
北极用可控刚度钢质锥形钻头controlled stiffness steel arctic cone
岩心钻头钻进coring
整体取心钻头consolidating coring penetrators
无岩心金刚石钻头blasthole bit
最终井段牙轮钻头供应supply of rock bits for final section
熔凝钻头melting consolidating penetrator
表层钻井用牙轮钻头供应supply of rock bits for surface drilling
钢绳冲击钻进用钻头规格Pennsylvanian Standard
钻头压力降pressure drop across bit
钻头喷咀压降pressure drop in bit nozzles
钻头成本cost of the bit
钻头每分钟转数bit revolutions per minute
钻头水马力hydraulic horsepower at bit
钻头直径每英寸磅数钻压pounds per inch of bit diameter
钻杆卡头drill adaptor

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