A red residual soil in humid tropical and subtropical regions that is leached of soluble minerals,aluminum hydroxides,and silica but still contains concentrations of iron oxides and iron hydroxides.
英
美
释义
红土湿润的热带或亚热带地区的红色残留土,被雨水冲掉了可溶性矿物质、氢氧化铝和二氧化硅,但是仍保留了氧化铁和氢氧化铁。
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