Through the study by electronic probe it was found that many new cracks and holes appear on the surface of gold-bearing ......

高价格是氧的醇的常有的试剂，Ｖarma等报道，负载在湿在氧化铝上的三氧化铬醇氧化成相应的羧基化合物，反应在十几秒内完成，收率７２％－９０％。......

Thiobacillus ferrooxidans might be the most important bacteria used in biometallurgy. The foundation way of its growth p......