单词 | astatine |
释义 | astatine音标['?st?ti:n]汉语翻译n. 砹【化】 砹At 【医】 砹(85号元素) 词型变化:简写符号:At英语解释:名词 astatine:
详细解释:as.ta.tine n.Symbol At (名词)符号 At A highly unstable radioactive element, the heaviest of the halogen series, that resembles iodine in solution. Its longest lived isotope has a mass number of 20 and has a half-life of 8.3 hours. Atomic number 85; melting point 302=C; boiling point 337=C; valence probably , 3, 5, 7.See table at element 砹:极不稳定放射性元素,在卤族元素比重最大,在溶解状态与碘相象,它最长周期的同位素原子量为20,半衰期为8.3小时。原子序数85;溶点302=C;沸点337=C;化合价可能为、3、5、7参见 element 来源:Greek astatos [unstable] * see astasia 希腊语 astatos [不稳定的] *参见 astasia-ine 2-ine2 |
随便看 |
|
英语词典包含435040条英汉在线翻译词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。