钻孔技术 meaning in English

boring engineering

Coal seam injecting water boring hole technology under special condition
特殊条件下的煤层注水钻孔技术
Such drilling technology is untested , and digging these wells will require expert guidance
这种钻孔技术还未经过测试，开凿这样的井也需要专业指导。
Working zones of cutting tools - couple tool - material - part 7 : application to drilling technology on solid
切割工具的工作带.双工具材料.第7部分:对实体材料的钻孔技术的应用