ferrum

This article introduces a rapid analysis and adjustment of the copper and ferrum impurities in nickelage solution.

本文主要介绍了镀镍液中杂质铜、铁的快速分整方法。

The content of the available ferrum enhanced by recycled straws, but that of the available zincum, copper and manganese had no changed obviously in soil.

秸秆直接还田提高了土壤的有效铁含,但对有效铜、有效锌有效锰含影响不大。