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Radium

Nghe phát âm
( Xem từ này trên từ điển Anh Việt)

Noun

Chemistry . a highly radioactive metallic element whose decay yields radon gas and alpha rays. Symbol: Ra; atomic weight: 226; atomic number
88.
a lustrous rayon or silk fabric constructed in plain weave and used in women's apparel, lining, and drapery.

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