copper

• Nitric acid bites copper .
  硝酸能腐蚀铜。
• Copper is also employed in the alkaline bemberg rayon process .
  铜也用在碱性本姆伯人造丝生产中。
• By oxidation-reduction reaction, copper is cemented into the iron .
  经氧化还原反应，铜渗入铁中。
• The silver coinage was repeatedly debased with copper vellon .
  银币一再用铜币维隆来替代，实行贬值。
• Zinc base die castings are always copper plated in cyanide baths .
  锌基合金的压铸件总是在氰化镀液中镀铜。
• Possibly they first found native copper and hammered it into shape .
  可能他们最初找到的是生铜，把它锤击成形。
• The contact area between clamp and terminal is either silver or copper .
  夹头和电极之间的接触面是银的或铜的。
• Are copper coins legal tender for a sum in excess of 10 pounds?
  超过十镑的数目可以用铜币作为法定货币来偿付吗？
• The antiseptic properties of copper sulphate have never been questioned .
  硫酸铜具有防腐性，这是不曾有过问题的。
• In addition to copper , there are many other metals which are good conductors .
  除了铜，还有很多其它金属都是良导体。