| 单词 |
rare earth element |
| 释义 |
rare earth element
rare earth elementOne of a series of metallic elements that follow lanthanum (at. no. 57) in the periodic table of elements and that have oxides with similar properties. The series comprises the 14-element lanthanide series (at. nos. 58-71 and includes praseodymium, promethium, and ytterbium. See also: elementLegalSeeElementAcronymsSeeREE |
| 随便看 |
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