core drilling

基本解釋

Diamond coring bits are utilized for core drilling.
在取芯鑽井井段，選用金剛石取芯鑽頭。
One of the most important geophysical techniques is core drilling, which is carried out with a hollow cylinder through subsurface layers to obtain samples of rocks.
巖心鑽探是最重要的地球物理勘探技術(shù)之一。進行鑽探時，用一根空心琯穿過地表下層獲取巖石樣品。
Core drilling is also commonly used to create holes for routing cables or placing anchoring bolts, installing load carrying devices or dowel bars, or for concrete sample analysis.
鑽探也是常用的路由電纜制造或配售錨孔螺栓承載裝置安裝銷子或酒吧，或混凝土樣本分析。

As part of this lengthy process, petitioners were required to submit numerous items to the department, including detailed survey work and core drilling samples.
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Instead, there are late nights with Icahn building convictions by drilling down on two or three core issues, and lots of phone calls.
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Secondly, layered on top of our core thesis, we see significant upside from a potential industry shift back toward natural gas drilling.
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