非金属矿产 Nonmetallic Mineral Deposit2016-05-23
简介: There are 17 rare earth elements (REEs) in all — 15 lanthanides plus yttrium and scandium – and many of them make up key components of technologies used in modern life. From cellphones to laptops to wind turbines and fluorescent lights, rare earths are certainly ubiquitous in the modern world. Rare earths are commonly referred to in two groups, the heavy and light rare earths. Heavy rare earths such as dysprosium tend to be of higher value. Rare earths can also be grouped together according to their uses. Those used to make magnet rare earths include praseodymium, neodymium, samarium and dyspr...
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最后更新: 2016-05-23 21:58:01
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