金、银,是两种贵重金属矿产,历来为世人所瞩目。我国金、银资源丰富,开采历史悠久。早在三千多年以前的商代,就已掌握了金银冶炼加工技术,春秋战国时代又出 Gold, silver, are two kinds of precious metals minerals, has always been the world's attention. China's gold and silver are rich in resources and have a long history of mining. As early as three thousand years ago Shang Dynasty, already mastered the gold and silver smelting processing technology, the Spring and Autumn Period and the Warring States Period out