单词 | rutherfordium |
释义 | ruth·er·ford·iumBrE /ˌrʌðəˈfɔːdiəm/ NAmE /ˌrʌðərˈfɔːrdiəm/ noun [U ] (symbol Rf ) a chemical element . Rutherfordium is radioactive and does not exist in nature but is produced artificially when atoms collide(= crash into each other )𬬻(放射性化学元素) |
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