copper piece

• 铜片

copper piece的用法和样例：

例句

1. He was hammering the sheet of copper flat.
   他正把铜片锤平。
2. Copper plates are imported from Japan,pure silver ingots for plating from Switzerland,and argentic salt and other chemicals from Germany.
   采用日本进口的铜片，镀银用的瑞士纯银条，西德的银监及化工原料等等。