Iron and some nickel, both of which are metals.
铁和一些镍，它们俩都是金属。
Some metals, such as iron, cobalt and nickel, are magnetic. At low temperatures, some metals and intermetallic compounds become superconductors.
某些金属能被磁化，例如铁、钴和镍。在极低的温度下，某些金属和金属化合物能转变成超导体。
Some metals, such as iron, cobalt and nickel, are magnetic.
某些金属能被磁化，例如铁、钴和镍。
Some metals, such as iron, cobalt and nickel, are magnetic.
某些金属能被磁化，例如铁、钴和镍。
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