copper facing

• 镀铜

copper facing的用法和样例：

例句

1. 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。
2. The development history of cyanide-free copper electroplating is briefly reviewed.
   摘要简要回顾了无氰碱性镀铜的发展历史。