For example steel base plated copper, nickel, chromium plating, low layer again tin bronze chrome, multi-layer nickel chrome plating nickel ferroalloy, chrome, and so on.

例如钢基上镀铜、镍层再镀铬、低锡青铜上镀铬、多层镍上镀铬、镍铁合金镀层上镀铬等等。

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Coins made of copper, bronze and copper-nickel can change over time.

由铜，青铜和铜镍线制造的硬币可能随时改变。

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Bronze (copper tin alloy) : its main feature is the addition of zinc nickel, corrosion resistance is very good.

青铜即(铜锡合金)：它主要的特色是除了锌镍之外，耐腐蚀性很好的。

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Many French horns, for example, are made of nickel silver, an alloy of copper, zinc, and nickel (it's silver in name and color only), and some are made of nickel bronze, an alloy of copper, tin, and nickel. (Brass itself is an alloy of copper and zinc.) Many brass instruments are silver-plated (sterling silver on brass), and some are gold-plated.

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