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    thallium

    thallium - 365bet中国官方网站 definition and meaning for word thallium

    Definition
    (noun) a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores
    Synonyms : atomic number 81 , tl
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