rare noble metal的意思|示意

The utility model has wide application for extracting rare metal, noble metal and non-ferro metals.

广泛用于提炼 稀有金属、贵金属、有色金属。

The process of recovering noble metals from carbonyl metallurgical residue includes separating out base metal, leaching out Au, Ag and platinum metals and producing rare noble metal concentrate.

一种回收羟化冶金残渣中贵金属的方法，涉及一种从羰化合成残渣中分离 贱金属，浸出分离金银及铂族金属，产出稀有贵金属精矿的方法。

Because the gold is the rare noble metal, therefore the human is undertaking at present still the international reserves task.

因为黄金是稀有贵重金属，所以目前依然担负着国际储备任务。