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；

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One Patriot hallmark that has helped circulation: large type.

FORBES: Press Lords

You are seeing more open meeting spaces, lounge furniture near circulation spaces and that type of thing.

CNN: 'Generation Y' set to transform office life

They are thought to be of a type that has been in circulation for a decade, with specimens turning up mostly in Spain, Italy, Germany, Bulgaria and Portugal.

BBC: Portugal seizes huge haul of fake euros