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Technology
containing
岩 心 钻
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all forms
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in specified order only
Chinese
English
全断面无
岩心钻
头
full hole rock bit
全断面无
岩心钻
头
full hole bit
实心钻头凿岩
solid drilling
岩心钻
机
core drill rig
岩心钻
机
core boring rig
岩心钻
进
core boring
逆循环钻进岩心管
reverse circulation core barrel
钢索
岩心钻
管
wire-line core barrel
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