单词	einsteinium
释义	einsteinium /ʌɪnˈstʌɪnɪəm / noun [mass noun] The chemical element of atomic number 99, a radioactive metal of the actinide series. Einsteinium does not occur naturally and was discovered in 1953 in debris from the first hydrogen bomb explosion. (Symbol: Es) They were named after two of the century's most creative physicists: einsteinium and fermium.... All isotopes of einsteinium are radioactive, the most stable being einsteinium - 252 with a half life of 20.47 days. Atomic number 101 is a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles. Origin 1950s: from the name of Albert Einstein, Albert + -ium.
随便看	Lubyanka Lucan Lucas, George Lucas van Leyden Lucca luce Luce, Clare Boothe Luce, Henry Robinson lucency lucent lucerne Lucerne, Lake luchador lucha libre lucid lucid dream lucid dreamer lucid dreaming lucidity lucidly Lucifer lucifugous lucine Lucite luck

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。