A hard, silvery-white, metallic chemical element of the platinum group, atomic number 44. Symbol Ru.
| 单词 | θ68723 |
| 释义 | the world > matter > chemistry > elements and compounds > metals > specific elements > ruthenium > [noun] (1) ruthenium1829 A hard, silvery-white, metallic chemical element of the platinum group, atomic number 44. Symbol Ru. |
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