Iron and some nickel, both of which are metals.
铁和一些镍，它们俩都是金属。
The physical core is crystallized in magnetic iron-nickel alloy-composite. The core is not hollow.
物质核心是磁性铁镍合金复合材料的结晶，其核心不是中空的。
It also is probably composed of iron and nickel.
它可能也是由铁和镍组成的。
Some metals, such as iron, cobalt and nickel, are magnetic.
某些金属能被磁化，例如铁、钴和镍。
Key: double-bitted iron key, nickel plate. KA or KD.
钥匙：双面钥匙，镀镍。通开/非通开。
Key: double-bitted iron key, nickel plate. KA or KD.
钥匙：双面钥匙，镀镍。通开/非通开。
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