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- The in-situ underground leaching of low-grade copper ore is a new technology of extraction of copper from its ore resources. 难采难选低品位氧化铜矿就地破碎浸出技术是一项崭新的资源回收综合技术。
- There ex-ist some big corporations united and in collabrating on adopting biological leaching technology for industrial extraction of copper,nickle and zinc. 基本金属特别是铜的生物浸出也即将实现工业化。世界上已有一些大公司联合起来,为在工业上用该技术提取铜、镍、锌而共同努力。
- 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。
- The refuse of sugar cane after extraction of the juice. 甘蔗渣在汁液被榨完以后剩下的甘蔗废料
- 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。
- The extraction of a root of a quantity. 开方,求一个数的方根
- 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。
- Optimal extraction of Psoralea corylifolia L. 补骨脂有效成分提取工艺的考察。
- He was hammering the sheet of copper flat. 他正把铜片锤平。
- Extraction of Nicotine from tobacco waste. 从烟草废料中萃取尼古丁
- A vein of copper was seen criopping out. 可以看见一条铜矿矿脉露出地面。
- Extraction of abstract data from XML files. 提取的抽象数据从XML文件。
- The valences of copper are 1 and 2. 铜的化合价是+1价和+2价
- Extraction of air is required at cooking surfaces. 在烹饪中提取所需空气表面.
- The fusion of copper and zinc makes the metal brass. 铜和锌的熔化制成黄铜。