- a metallic transuranic element artificially produced from plutonium. Symbol: Es; atomic no: 99; half-life of most stable isotope, 252Es: 276 days
单词 | einsteinium |
释义 | WordReference Random House Unabridged Dictionary of American English © 2024 ein•stein•i•um (īn stī′nē əm),USA pronunciation n. [Chem., Physics.]
Collins Concise English Dictionary © HarperCollins Publishers:: einsteinium /aɪnˈstaɪnɪəm/ n
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