drill inv.训练(某人)掌握(某种技能;法则等);套管钻进
drilln.钻孔机;钻子;反复操练;播种机v.练习;钻孔;(军事)训练
drilling-time log钻时录井
drill collar thread钻铤螺纹
drillstring failure钻柱失效
drill pipe tie-in钻杆接头
drilling improvment钻机改进
drilling centralizer钻井定心器
Drilling pile driver冲孔桩
drilling information钻井信息
drilling performance钻削性能
drilling bitten pile钻孔咬合桩