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non-core drilling
el.
无岩心钻进
eng.geol.
不取芯钻进
expl.
不取心钻进
钻进时,在孔底不保留岩心,而主要根据岩屑分析和测井资料来研究了解地下地质情况的钻进方法
tech.
无岩芯钻进
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