counter-circulation 反环流
counter-circulation cell 逆环流圈
counter circulation coring 反循环取心
pneumatic counter-circulation 气动反循环
circulation counter current 逆流循环
circulation counter 循环计数器
·2,447,543篇论文数据，部分数据来源于NoteExpress
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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