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Apparatus and method for geological drilling and coring
Apparatus and method for geological drilling and coring
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机译:地质钻探取芯的装置和方法
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摘要
Apparatus and method for complete reverse air vacuum drilling by entrainment of chips and dust in a high velocity air stream created by applying a vacuum to the drill stem or the annulus of a drilled hole, removing the drilled particles by entrainment in the flow of air created by the vacuum and collection of the drilled particles for visual or other analysis.
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