短语
天鹅绒金矿/纸醉金迷
Velvet Goldmine
富矿纸
Rich Mineral Paper
矿物纤维纸
mineral fiber paper
矿物砂纸
mineral sandpaper
矿棉纸油毡
mineral wool paper asphalt felt
选矿车间月报纸
Ore dressing workshop monthly newspaper
采矿工程图纸
mining engineering sheet
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