drill up向上挖掘
drilln.钻孔机;钻子;反复操练;播种机v.练习;钻孔;(军事)训练
drilling and pouring piles钻孔灌注桩
drilling super-intendent[经] 钻井队长
drilling in surface mining露天矿穿孔
drills a generation of pit以钻代坑
drilling fluid formulation钻井液配方
Drill rods for core drills岩心钻钎杆
Drilling pipe for sampling取样钻杆
drilling fluid performance钻井液性能
Drill pupils in grammar.经反复训练使学生完全掌握语法