铅、铁、铜、锡和锌都是基本金属。

Lead, iron, copper, tin, and zinc are base metals.

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聪明人的头发含有更多的锌和铜。

Intelligent people have more zinc and copper in their hair.

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地下埋藏着大量的金，银，铜，铅和锌。

Hidden underground is a wealth of gold, silver, copper, lead and zinc.

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铜锌硫多金属矿石分离历来是选矿界的难题。

Separation of Cu, Zn and sulphur has been a difficult problem for a long time.

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铜锌硫多金属矿石分离历来是选矿界的难题。

Separation of Cu, Zn and sulphur has been a difficult problem for a long time.

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