copper nucleinate

例句：

1. 1.Copper is an important element in the production of electronics.
   铜是电子制造中的重要元素。
2. 2.The scientist discovered a new way to extract copper from ore.
   这位科学家发现了一种新的从矿石中提取铜的方法。
3. 3.Copper is often used in electrical wiring due to its high electrical conductivity.
   由于其高导电性，铜常用于电气线路中。