The effective experimentation about reducing the content of Fe-Mn in water, and its benefit is described in this paper.

着重就降低水中的铁、锰含量进行了有效的试验，最终取得良好的效果和效益。

youdao

Original state waste residue from Fe-Mn blast furnace substituting for part cement is made into mortar specimens and the mortar strengths drop largely.

用锰铁高炉产出的原状废渣代替部分水泥制作的砂浆试件， 强度下降幅度较大。

youdao

Speciation of Zn, Mn, Fe, Ca, Mg in Ligusticum wallichii Franch was analyzed by atomic absorptionspectrometry.

利用原子吸收分光光度法对中药川芎中锌、锰、铁、钙、镁五种元素的形态进行了研究。

youdao