1)direct iron process,直接炼铁法2)hyl process,海尔直接炼铁法3)direct ironmaking,直接炼铁4)midrex process,米德雷斯直接炼铁法5)direct lead-smelting process,直接炼铅法6)direct melting mehtod,直接熔炼法
用法例句
On the basis of comparing several kinds of new direct lead-smelting processes,the principles,technologies and their advantages of basic direct lead-smelting processes were described briefly,and the advances in the treatment of silver concentrate was also reported.
