有很多沙粒是红色的,这是由于其表面有一层薄薄的铁,这些铁元素来自于空气中。
Many desert sands have a faint red color caused by a thin layer of iron that precipitates from the atmosphere and coats the grains. (Magnification 85x)
脱氧是加进同氧的亲和力比铁更大的元素来实现的。
Their hemoglobin is both in high content, but also in high oxygen affinity.
脱氧是加进同氧的亲和力比铁更大的元素来实现的。
Their hemoglobin is both in high content, but also in high oxygen affinity.
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