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世界上最大的金银库在哪里?人们惊异地发现:在海里。据科学测定,单从黄金的储量来说,每立方千米海水中有5吨黄金。从绝对量来说,海水中溶解有黄金70亿吨,这还不包括海底的大量砂金。人们曾用电镀法、离子交换法、细菌冶金法,从海水中提取黄金,得到不少成绩。德国在第一次世界大战战败后支付的赔偿费中,就有用海水提取来的黄金。近些年来,也有些
Where is the world's largest gold and silver bank? People were surprised to find: in the sea. According to scientific tests, from the gold reserves alone, there are 5 tons of gold per cubic kilometer of seawater. In absolute terms, there are 7 billion tons of gold dissolved in the sea, which does not include the large amount of gold in the sea. People have been electroplating, ion exchange, bacterial metallurgy, gold extraction from seawater, get a lot of achievements. In the compensation paid by Germany after the defeat of the First World War, gold extracted from seawater was used. In recent years, there are some