高位近水平钻孔
high location strike near-horizontal hole
近水平长钻孔
approximate horizontal long-hole
探放水钻孔
drilling of exploring and discharging water
水下钻孔灌注桩
under water bored cast-in-situ pile
水下钻孔爆破
Underwater drilling blasting
boring explosion underwater
underwater drilling blast
underwater bored blasting
Underwater Drilling and Blasting
水上浮动钻孔平台
floating platform for boring
水平钻孔压力记录器
horizontal borehole pressure recorder
水平钻孔机
horizontal boring machine
高水压大仰角钻孔
drilling with high water level and large elevation angle
奥陶系石灰岩含水层钻孔
boreholes in aquifer of Ordovician limestone
水平钻孔法
horizontal drilling process