coinage alloy 中文意思是什麼
coinage alloy
解釋
貨幣合金-
With the gradual decline of gold and silver coinage in the early twentieth century and the decline in the real value of coins maintaining the integrity of a coin has become largely a matter of security features in the design particularly in the milling and edging and of the choice of alloy used in manufacture
由於20世紀初黃金及白銀鑄造的錢幣逐漸式微,錢幣本身的價值也告下降,要維持錢幣的公信力,便須主要從防偽特徵的設計尤其刻制槽紋及邊緣處理及選擇適當的合金材料方面入手。
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