alumina-copper

常見例句

• The chemical symbol for copper is "Cu".
  銅的化學(xué)符號是Cu。
• What color is copper sulphate solution?
  硫酸銅溶液是什麼顔色？
• Copper and gold are both metals.
  銅和金都是金屬。
• Copper has less resistance than lead.
  銅的電阻比鉛的小。
• What color is copper sulfate solution?
  硫酸銅溶液是什麼顔色？
• A copper coin formerly used in India and Pakistan.
  安那舊時(shí)在印度和巴基斯坦使用的銅幣
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