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for subject
Metallurgy
containing
岩 心
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Chinese
English
孕镶金刚石
岩心
钻头
diamond-impregnated core drill bit
岩心
管
core barrel
岩心
记录
drill record
岩心
记录
drill-log
岩心
钻头
coring bit
岩心
取心
钻头
hollow bit
岩心
钻头
jack bit
岩心
钻头
core drill bit
金刚石
岩心
钻头
diamond-impregnated core drill bit
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