单词 | lanthanum |
释义 | lanthanum['lænθənəm]n. 镧【化】 镧La【医】 镧(57号元素) lanthanum lan.tha.num AHD: [l²n“th…-n…m] D.J. [6l#nG*n*m]K.K. [6l#nG*n*m]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 138.91; melting point 920&9{=}C; boiling point 3,469&9{=}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&9{=}C;沸点3,496&9{=}C;比重5.98到6.186;原子价3参见 element语源:1. New Latin 现代拉丁语 2. 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)] |
随便看 |
|
英汉双解词典收录913115条英汉汉英双解翻译词条,基本涵盖了全部常用单词的读音、翻译及用法,是英语学习的有利工具。