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drilling process
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drilling process
Encyclopedia
理学
钻进工艺
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drilling process
钻进工艺
用选定的钻探设备、机具、钻头、冲洗介质和取样工具等向目标靶区钻进并形成钻孔的方法。
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underglaze dark blue glazed
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undergraduate education of pratacultural science
Undergraduate Specialty Catalogue of Higher Education Institution
Underground
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