| 单词 | erbium |
| 例句 | Other elements are less familiar—hafnium, erbium, dyprosium and praseodymium, say, which we do not much bump into in everyday life. Cosmos 1980-01-01T00:00:00Z The 17 elements are: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium. Explainer-China's rare earths dominance in focus after mineral export curbs 2023-07-05T04:00:00Z Rare earth metals are a group of 17 elements - lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium - that appear in low concentrations in the ground. Explainer: China's rare earth supplies could be vital bargaining... 2019-05-22T04:00:00Z But the most useful rare earth - in optical terms - is probably erbium. Neither rare, nor earths 2014-03-23T00:40:26Z Fiber-optic cables need erbium, europium, terbium and yttrium. U.S. Tangles With China Over Rare Earth Exports 2012-03-13T22:05:42Z |
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