根瘤含有亚铁和亚铁一氧化豆血红蛋白的混合物.Nodules contain a mixture of ferrous and ferrous - oxy leghemoglobin.在PH值 7.0―7.5时,一经曝气亚铁离子很容易转化为铁离子.Conversion of ferrous to ferric iron occurs readily upon aeration at PH 7 . 0 - 7. 5.第三个例子是前章提到的硫...

“亚铁”的英语可以翻译为：[机] ferroporphyrin ...