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 fluid invasion钻井液侵入
drilling fluid drilling钻井液钻井
drilling machine column钻床立柱
drilling fluid rheology钻井液流变性
drill footage per month月进尺
drilling rod deficiency钻具缺陷
drill press accessories钻床附件
drilling rig roundabout回旋钻机
drilling grountion post钻孔灌注桩
Drilling and aspiration钻孔抽吸引流