单词 | atomic number 67 |
释义 | atomic number 67 (extremely rare) n WORD FAMILY atomic number 67 n a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds Syn|Hyper Ho, holmium 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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