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Oil / petroleum
containing
钢砂
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in specified order only
Chinese
English
钢屑砂浆
steel chip mortar
钢砂
steel shot abrasive
钢砂
磨粒
steel shot abrasive
钢砂
钻井
steel shot drilling
钢砂
钻井钻头
crown for chilled shot
钢砂
钻具
shot drill
钢砂
钻孔
shot boring
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