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 resistivity井液电阻率
drilling-blasting method钻爆法
drilling mud metering pump钻井泥浆计量泵
drilling lubricating agent钻探润滑剂
drill - hang cultivating穿耳开放式养殖
drilling technology design钻井工艺设计
Drilling wood to make fire钻木取火
drill hole geologic record钻孔地质编录
drilling-bit improvement钻头改进
drilling path optimization钻孔路径优化