copper and copper alloy的用法和樣例：
例句
- A process and formula for gold imitated coloring of copper and copper alloy by cathodic reduction were advanced in detail.
詳細介紹了一種銅及銅合金陰極還原著仿金色工藝及其配方。 - The performance and application in related industrial equipment of copper and copper alloy wiling oil are reviewed in this paper.
介紹了研製的銅及銅合金軋制油的性能及在四輥可逆軋機上的使用情況。
