electrum造句
Gold mainly exists as gold minerals , including
electrum, silver - bearing native gold.
金以矿物态为主,金矿物主要为银金矿 、 含银 自然金.
Most natural
electrum also contains copper, iron, palladium, bismuth, and perhaps other metals.
大部分天然银金矿含有铜 、 铁 、 钯 、 铋, 可能还有其它金属.