| 释义 |
ruthenium/rʊˈθi:niəm/n. Chem. a rare hard white metallic transition element, occurring naturally in platinum ores, and used as a chemical catalyst and in certain alloys (symbol 符 Ru) 【化】(化学元素)钌(白色坚硬的稀有过渡金属元素，天然存在于铂矿中，用作化学催化剂或制合金) [medieval Latin Ruthenia Russia (from its discovery in ores from the Urals)] |