ein.stein.i.um
n.Symbol Es （名词）符号 Es 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 27' days. Atomic number 99; melting point 8'0=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27'天，原子序数99；熔点8'0=C参见 element
来源：After &B{Albert} Einstein 源自 &B{阿尔贝特} Einstein
