矿石中银与铜呈明显正相关关系，而方铅矿中不含银。
Silver is positively correlated with copper in ores and is absent in galena.
无火之烟——只有铜、锌、金和银，与难以想象的生物。
Smoke without fire-just copper, zinc, gold and silver, and creatures unimaginable.
用显微硬度、电子拉伸等试验方法，测定了银、铜、钽的硬度、抗拉强度、延伸率与冷加工变形量的关系及冷加工态银、铜、钽退火软化曲线。
The hardness, tensile strength and elongation of Ag, cu and Ta, their relationship with the degree of cold work and soften annealing curves of cold-worked Ag, cu and Ta were investigated.
应用推荐