网站首页  汉语字词  英语词汇  范文大全  符号大全

请输入您要查询的英语词汇:

 

单词 核子反应
释义 〔einsteinium〕A synthetic transuranic element first produced by neutron irradiation of uranium in a thermonuclear explosion and now usually produced in the laboratory by irradiating plutonium and other elements. Its longest-lived isotope is Es 254 with a half-life of 276 days. Atomic number 99; melting point 860°C. See table at element 锿:一种人工合成超铀元素,在一次热核子反应的铀中子辐射中首次产生。 现在通常通过在实验室里辐照钚和其它元素而产生,其最不易衰变的同位素是Es254, 它的半衰期为276天,原子序数99;熔点860°C 参见 element
随便看

 

学习网英语词汇栏目收词371507余条,连同派生词、复合词、词组和习语等。每个词条提供了音标、词性、释义、用法、搭配和同(近)义词等多项功能,对所收词汇进行全方位的解释和说明,内容丰富,功能全面。

 

Copyright © 2000-2024 xuexi.run All Rights Reserved
更新时间:2025/3/12 20:51:39