铁和一些镍，它们俩都是金属。

Iron and some nickel, both of which are metals.

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选用镍/铁和铜/铁双金属对四氯乙烯（PCE）进行脱氯试验 。

Ni/Fe and Cu/Fe bimetal were used to dechlorinate tetrachloroethene(PCE).

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海底锰结核中含有大量的锰、铁、铜、钴、镍等金属元素，被公认为是一种重要的陆地矿产替代资源。

Seabed manganese nodules contain a great deal of metallic elements such as manganese, iron, copper, cobalt and nickel, and they were thought as an important substitute resource for land ore.

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