alumina-copper

常见例句

• The chemical symbol for copper is "Cu".
  铜的化学符号是Cu。
• What color is copper sulphate solution?
  硫酸铜溶液是什么颜色？
• Copper and gold are both metals.
  铜和金都是金属。
• Copper has less resistance than lead.
  铜的电阻比铅的小。
• What color is copper sulfate solution?
  硫酸铜溶液是什么颜色？
• A copper coin formerly used in India and Pakistan.
  安那旧时在印度和巴基斯坦使用的铜币
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