The test result shows that the black copper is a gold containing(2%) copper alloy, and its surface composition mainly is copper oxide.
经过分析表明：乌铜是一种铜金合金，金含量为2%，表面成分主要是氧化铜。The intermetallic compounds (IMCs) between copper and gold and between copper and aluminum are identified on the fractured surfaces by EDAX.
在焊点的剪切面上做EDAX，识别了铜-金和铜-铝之间的金属间化合物相。In recent years, the copper, gold, lead, zinc polymetallic mineralization closely related to this intrusion was revealed in exploration.
近年来，勘探发现了与该岩体密切相关的铜、金、铅、锌多金属矿化。Jiujiang-Ruichang ore concentration area is a important part of middle to lower Yangtze Cu-Au mineralizing belt.
九瑞矿集区是长江中下游铜金成矿带的重要组成部分。Shizishan orefield is the most representative large-size copper-gold orefield in Tongling ore district, Anhui Province.
狮子山矿田是安徽铜陵矿集区内最具代表性的大型铜金多金属矿田。and bronze powder is expensive makes business card printing and membership card production costs.
并且铜金粉比力腾不贱会使制卡和会员卡制作本钱调矮。Wars in Europe had boosted demand for Congo's copper, gold, tin, rubber and cotton.
当时，欧洲国家的战争也加大了对刚果自然资源的需求，如铜、金、锡、橡胶与棉花。With professional experience of iron, copper, gold and other mineral resources or coke and coal and steel markets is preferred.
具有铁、铜、金等矿产资源或焦煤或钢铁等市场行业经验优先考虑；Forty-six S&P 500 companies including Caterpillar Inc. and Freeport-McMoRan Copper &Gold Inc. are scheduled to report earnings today.
在标准普尔500指数中，卡特彼勒公司、弗里波特-麦克莫兰铜金公司（Freeport-McMoRanCopper&Gold）等46家企业定于今天公布财报。