And this is usually done over catalysts, like an iron oxide catalyst or something.
经常还需要一些催化剂，像氧化铁催化剂或其它东西用。
Iron oxide, after all, is not toxic.
毕竟氧化铁是无毒的。
Hematite is an iron oxide that is deep red in color.
赤铁矿是一种具有深红颜色的氧化铁。
So we'll have an iron oxide species. It's a solid.
那么我们有氧化铁，它是固体。
Corrosion on iron. Red oxide deposits on the surface of the metal.
铁的腐蚀。红色氧化物沉积在金属表面。
The function and application of iron oxide in water treatment are briefly described.
简要叙述了在水处理中铁氧化物的作用与应用情况。
Iron oxide powder is the main raw material for ferrite magnetic material.
氧化铁粉是铁氧体磁性材料的主要原料。
A good quality transparent yellow iron oxide pigments have been made by air oxidation.
利用空气氧化法得到了性能优良的透明氧化铁黄颜料。
Answer: the ferrous oxide iron quality score than big.
答：氧化亚铁含铁质量分数比大。
Iron is made by reducing iron oxide in a large device called blast furnaces.
铁是在一种叫做鼓风炉的大型设备里通过将氧化铁还原制得的。
Iron is made by reducing iron oxide in a large device called blast furnaces.
铁是在一种叫做鼓风炉的大型设备里通过将氧化铁还原制得的。
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