copper-gold alloy

• 铜金合金

copper-gold alloy的用法和样例：

例句

1. The etching liquid etches the gold or gold alloy layer existing between the columns evenly.
   该蚀刻液均匀蚀刻柱之间存在的金或金合金层。
2. The main problems in determination of gold by the back titration for the excessive FeSO4 with potassium bichromate were discussed and experimented.
   对重铬酸钾滴定过量硫酸亚铁返滴定法测定金合金中金的主要问题做了探讨和实验。