smelting

You see he mentioned smelting.

你看他提到了熔炼。

When he said smelting, I said, OK, you got it.

当他说熔炼，我会说，好，你明白了。

A mixture of a metal with its sulfides, produced by smelting the sulfide ores of copper, lead, or nickel.

锍，冰铜一种带有硫化物的金属混合物，由熔炼铜、铅或镍的硫化物矿石而制成。