| 单词 | cerium metals |
| 释义 | cerium /sēˈri-əm/nounA metallic chemical element (symbol Ce; atomic no 58), one of the rare-earth metals ORIGIN: Named from the asteroid Ceres discovered about the same time cēˈria noun Its oxide cēˈric or cēˈrous adjective Of or containing cerium cēˈrite noun A mineral, its hydrous silicate cerium metals plural noun A group of rare-earth metals including cerium, lanthanum, neodymium, samarium, promethium and praseodymium |
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