A process and formula for gold imitated coloring of copper and copper alloy by cathodic reduction were advanced in detail. 详细介绍了一种铜及铜合金阴极还原着仿金色工艺及其配方。
The performance and application in related industrial equipment of copper and copper alloy wiling oil are reviewed in this paper. 介绍了研制的铜及铜合金轧制油的性能及在四辊可逆轧机上的使用情况。
copper and copper metal alloy怎么读 copper and copper metal alloy是什么意思
