Then the whole thing was polished using a powdered iron oxide mixed with water, probably buffed up with a chamois leather.
接下来用一种氧化铁和水混合液体来抛光打磨整件物品，极可能是拿着块麂皮来弄的。
The scientists then added powdered magnetite, an iron oxide present on Mars, to the flasks.
科学家接着又往烧瓶内加入粉末状磁铁矿和火星上现有的一种氧化铁。
Pig iron, scrap steel, forging steel, powdered ore (gold, copper and iron), scrap copper & aluminium, coke, scrap plastic, scrap paper, rubber.
生铁、废钢、金铜铁矿粉、废铜铝、焦碳、废塑料，废纸、橡胶。
The invention discloses a method for preparing the chromium-iron alloy directly by adopting the chromium iron powdered ore.
本发明公开了一种利用铬铁矿粉直接制备铬铁合金的方法。
The invention discloses a method for preparing the chromium-iron alloy directly by adopting the chromium iron powdered ore.
本发明公开了一种利用铬铁矿粉直接制备铬铁合金的方法。
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