iron oxides短语¹³¹⁶²⁰⁺³ 基本例句 铁氧化物 Although all sedimentary rocks contain iron, the deposits that are richest in iron consist of predominantly minerals such as iron oxides, carbonates, silicates and sulfides. 尽管所有的沉积岩都含有铁，但是这种沉积岩却富含的铁矿中含有主要的成分，比如氧化铁，碳酸盐，硅酸盐和硫化物。 iask.sina.com.cn