表土顿钻钻孔  spudding bit

大孔钻孔  big-diameter hole drilling

弓钻钻孔器  brace bit

滚流水钻  tumble drilling

精密深孔钻孔工具  precision deep hole drilling tool

排水钻孔  unwatering borehole

平行钻孔钻架  gadding machine

深孔钻孔  deep hole drilling

深水钻孔灌注桩  deep water bored pile

深水钻孔桩  deep water drilling pile; deepwater bored pile

生物钻孔孔隙度  boring porosity

数控深孔钻钻床  CNC drilling machine

水冲钻钻孔  hydrauger hole

探放水钻孔  drilling of exploring and discharging water

泄水钻孔  release hole

涌水钻孔  water inrush borehole

钻孔、钻头、钻床  Drill

钻孔水力采矿  boring hydraulic mining

钻孔水位  hole water level