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铂,俗称白金,是一种稀有的贵金属。它在地壳中的含量仅为金的五十分之一,全世界每年铂的供应量也只有金的二十分之一。成吨的含铂矿石,经过150多道工序,耗时数月,所提纯的铂只够制成一枚小小的戒指。 根据考古发掘,埃及人在公元前700年曾用铂来做装饰品,中美洲的印地安人则早在哥伦布发现新大陆之前1000年也流行过白金首饰。不过,在那时候,除了印地安人和古埃及人外,铂在世界其他地方
Platinum, commonly known as platinum, is a rare precious metal. Its content in the earth’s crust is only one-fiftieth of that of gold, and the annual supply of platinum in the world is only one-twentieth of that of gold. Tons of platinum-containing ore, after more than 150 processes, took months, the purified platinum is enough to make a small ring. According to archeological excavations, Egyptians used platinum as an ornament in 700 BC, and Indians of Central America prevalently made white gold jewelry 1000 years before Columbus discovered the New World. However, at that time, platinum was in the rest of the world except Indians and ancient Egyptians