billon
英 ['bɪlən] 美 ['bɪlən]

n.

银与铜锡等的合金；金合金；银合金；

英英释义

Billon

• Billon is an alloy of a precious metal (most commonly silver, but also mercury) with a majority base metal content (such as copper). It is used chiefly for making coins, medals, and token coins.

以上来源于:Wikipedia

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