| 单词 | atomic number 60 |
| 释义 | atomic number 60 (extremely rare) n WORD FAMILY atomic number 60 n a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium Syn|Hyper Nd, neodymium metal, metallic element any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
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