| 词汇 | rubidium |
| 释义 | ru·bid·iumBrE /rʊˈbɪdiəm/ NAmE /rʊˈbɪdiəm/ noun [U ] (symbol Rb ) a chemical element . Rubidium is a rare soft silver -coloured metal that reacts strongly with water and burns when it is brought into contact with air 铷 |
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