drillern.钻孔机;钻床;钻探工
drilln.钻孔机;钻子;反复操练;播种机v.练习;钻孔;(军事)训练
drilling dust钻粉
drilling cost打钻费
drilling risk钻井风险
drilled raise超前钻孔开凿开井法
drilling rope钻井钢丝绳
drill seeding畦播,条播
drilled shaft竖井
drill-pressn.钻床
drilling crew井队
drill a tooth钻牙