英语词汇“sandwich coin”是什么意思，“sandwich coin”的读音、用法及例句翻译-烛光网

词汇	sandwich coin
释义	sandwich coinn.（名词） A coin having a layer of one metal, such as copper, between exterior layers of a different metal, such as silver.简易硬币，包层硬币：一种硬币，夹层为一种金属（如铜夹层），外层为不同金属（如银外层）
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