core barrel
... core barrel岩芯钻管;[地质]岩芯管;[地质]心骨管;[地质]岩心筒 basket barrel岩心管;篮式取心筒;篮球桶;打捞筒 barrel filler灌桶机;自动灌桶器;装桶机 ...
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起始岩芯管 [油气] [地质] starting barrel
岩芯钻管 core barrel
地质]岩芯管 core barrel
·2,447,543篇论文数据，部分数据来源于NoteExpress
单动双层岩芯管钻具结构简单、操作方便、同轴度好、适用寿命长，能有效地提高岩、矿芯的完整度。
The swivel-tube barrel can effectively increase core recovery rato. suitable for drilling in formations in which oblique hole comes easy. It is effective to assure hole quality.
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