单词 | lanthanum |
释义 | lanthanum音标['l?nθ?n?m]汉语翻译n. 镧【化】 镧La 【医】 镧(57号元素) 词型变化:简写符号:La英语解释:名词 lanthanum:
详细解释:lan.tha.num n.Symbol La (名词)符号 La 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 38.9; melting point 920=C; boiling point 3,4'9=C; specific gravity 5.98 to '.8'; 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38.9;熔点920=C;沸点3,49'=C;比重5.98到'.8';原子价3参见 element 来源:New Latin 现代拉丁语 from Greek lanthanein [to escape notice (from the finding of the element hidden in oxide of cerium)] 源自 希腊语 lanthanein [避开注意力(指不被从铈氧化物元素中提取)] |
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