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Terms for subject Technology containing 岩 心 钻 | all forms | in specified order only
ChineseEnglish
全断面无岩心钻full hole rock bit
全断面无岩心钻full hole bit
岩心钻core drill rig
岩心钻core boring rig
岩心钻core boring
钢索岩心钻wire-line core barrel