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 steel钢钎,钻钢
drilling speed钻孔速度
drill assembly条播装置总成
drill-tubing钻杆
drilling point穿孔点
drill cuttings钻粉
drilling cycle钻井周期
drill abrasion钻孔磨损
drilling tools钻具
drilling press[机] 钻床