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atomic number 85
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  • n. a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

    同义词: astatine At

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    英英释义

    atomic number 85

    n.a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

    同义词:astatineAt




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