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单词 Tl
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Tl
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n

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Tl
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Thallium is a rare metal, whose atomic weight is 204.2, its symbol being Tl.
Anshutz, Edward Pollock, New, Old, and Forgotten Remedies: P...(2012)
Attach this piece by first binding to its extremities two strips of aluminium, or by preference very thin tinned iron, Tl and T2.
Williams, Archibald, Things To Make(2010)
n 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
Syn|Hyper
atomic number 81, thallium
metal, metallic element
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
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