Some superiorities of using down hole hammer counter circulation type continuous coring (sampling) method in gold ore exploration are expounded in this paper.
文中阐述了在金矿勘探中应用潜孔锤反循环连续取心（样）的优越性；
The present utility model discloses a down-hole depth-determining water sampling apparatus for solving a problem that depth-determining water sampling can not be realized in the prior art.
本实用新型的井下定深取水样装置，为了解决现有技术中无法定深取水的问题而发明。
The present utility model discloses a down-hole depth-determining water sampling apparatus for solving a problem that depth-determining water sampling can not be realized in the prior art.
本实用新型的井下定深取水样装置，为了解决现有技术中无法定深取水的问题而发明。
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