您要查找的是不是：
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- A large cooking pot made of copper or often of iron. 金属锅用铜或铁铸成的大煮锅。
- Studies on Disposal Diluent Solution of Sulphate of Copper in a Fluidized Bed Electrode 流化床电极处理低浓度硫酸铜废水研究
- Zambia is the world's largest exporter of copper. 赞比亚是世界上最大的铜输出国。
- The fusion of copper and zinc make the metal brass. 铜和锌的熔化制成黄铜。
- Thin wires easily melt if they are made of copper. 如果用铜制细导线极易熔化。
- An alloy of copper with10 percent tin. 炮铜一种掺有10%25的锡的铜合金
- Copper oxide is made up of copper and oxygen. 氧化铜是由铜和氧组成的。
- sulphate of copper 硫酸铜
- He was hammering the sheet of copper flat. 他正把铜片锤平。
- A vein of copper was seen criopping out. 可以看见一条铜矿矿脉露出地面。
- The antiseptic properties of copper sulphate have never been questioned. 硫酸铜具有防腐性，这是不曾有过问题的。
- The valences of copper are 1 and 2. 铜的化合价是+1价和+2价
- Sulphate of ammonia contains 20.6 per cent N and is a widely used fertilizer. 硫酸铰含氮20。6%25，是一种广为使用的肥料。
- The pedestal of the sculpture is made of copper. 这个雕塑的底座是铜制的。
- In the old days, mirror was made of copper. 在过去镜子是由铜做的。
- An alloy consisting of copper and nickle. 由铜和镍构成的一种合金。
- The price of tin is higher than that of copper. 锡价比铜价高。
- They worked a piece of copper into a tray. 他们把一块铜铸成一个盘子。
