钻探

After drilling for several weeks they finally struck oil.

钻了几个星期后, 他们终于发现了油矿。

It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.

岩土工程勘察的一种手段，包括钻、井、槽、坑、洞物、触等。

It is the reason why the wildcatter, the independent oilman whose test drillings might come up dry 20 times before gushing in the end, is an enduring Texas symbol.

这就是为什么些投机，些个体油油喷发前可能要试钻多达二十次的原因，这也是德州一直来的标志。