The phosphomolybdate blue spectrophotometric determination of phosphorus in ferromanganese was studied .
研究了磷钼蓝光度法快速测定锰铁中磷的方法。
Marine geology data : scripps institution of oceanography ferromanganese nodule analysis file .
海洋地质学数据：斯克里普斯海洋学院锰铁结核分析文档。
More ferromanganese concretions the sample contains , fewer soft magnetic coercivity components and more moderate and hard magnetic coercivity components the sample contains . Correspondingly , the sample of this kind has a low magnetic susceptibility .
