单词 | atomic number 75 |
释义 | atomic number 75 (extremely rare) n WORD FAMILY atomic number 75 n a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum Syn|Hyper Re, rhenium 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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