2005/10/11 | 赤铁矿[Hematite]
类别(℃〖化学〗) | 评论(0) | 阅读(19) | 发表于 20:41
The anhydrous iron oxide which has a corundum structure. It is common in nature, and is an important ore of iron. It is also used in making red paint pigment
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