青铜是一种铜锡合金。

Bronze is an alloy of copper and tin.

《柯林斯英汉双解大词典》

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。

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

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在古代就发现合金的价值，以黄铜(铜锌合金)和青铜(铜锡合金)为尤。

The value of alloys was discovered in very ancient times; Brass (copper and zinc) and Bronze (copper and tin) were especially important.

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