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单词 玻璃工
释义 〔lanthanum〕A soft, silvery-white, malleable, ductile, metallic rare-earth element, obtained chiefly from monazite and bastnaesite and used in glass manufacture and with other rare earths in carbon lights for movie and television studio lighting. Atomic number 57; atomic weight 138.91; melting point 920°C; boiling point 3,469°C; specific gravity 5.98 to 6.186; valence 3. See table at element 镧:一种质软、银白色、有延展性的、可塑性的稀有金属,主要是从独居石和氟碳铈矿中提取出来,用于玻璃工业及电影或电视摄影照明的碳棒灯中。原子序数57;原子量138.91;熔点920°C;沸点3,496°C;比重5.98到6.186;原子价3 参见 element
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