- development drilling
- 开拓: open up; reclaim; extension; ...
- 钻孔: drill; bore; drill hole perf ...
- 开拓: 1.(开辟; 扩展) open up; reclaim; extension; open-out prolongation; baring 开拓城乡市场 exploit the urban and rural markets; 开拓荒地 reclaim wasteland; 开拓市场 develop [explore] markets; 为发展石油工业开拓一条道路 open up a path for the development of oil industry; 开拓中美两国的联系 start contacts between china and the united states; 中国移民在十九世纪为开拓美洲大陆作出了贡献。 chinese settlers helped tame the american continent during the 19th century.2.[矿物学] (采掘前修建巷道等工序总称) developing; opening3.[数学] extension; 开拓成本 [经] develop cost; 开拓方法 development method; 开拓工程 development engineering; 开拓进尺 [煤矿] tunnelling footage; 开拓水道 [航海学] open lead; 开拓平巷 development drift; 开拓巷道 development working; 开拓钻孔 [采矿工程] development drilling; 开拓子 extensor
- 钻孔: [矿物学]1.(用尖锐的旋转工具在坚硬的物体上钻穿或钻孔洞) drill; bore; drill hole2.(为了装饰或识别而打孔) perforate3.(用钻钻的孔) borehole; solid boring; bouche4.(钻孔的一种动作和方法) boring; punching◇钻孔工 drillman; 钻孔机 drilling machine
- 开拓地: polder
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