The definition of iron resource efficiency was given, and the method to calculate iron resource efficiency was worked out.

定义了“铁的资源效率”，给出了铁资源效率的计算方法。

youdao

The definition of iron resource efficiency was given, and the method to calculate iron resource efficiency was worked out.

定义了“铁的资源效率”，给出了铁资源效率的计算方法。

youdao