europium

名词 europium:

1. a bivalent and trivalent metallic element of the rare earth group
   同义词：Eu, atomic number 63

eu.ro.pi.um

n.Symbol Eu （名词）符号 Eu
A silvery-white, soft, rare-earth element occurring in monazite and bastnaesite and used to dope lasers and to absorb neutrons in research. Atomic number '3; atomic weight 5.9'; melting point 82'=C; boiling point ,439=C; specific gravity 5.259; valence 2, 3.See table at element
铕：存在于独居石和氟碳矿中一种银白色、柔软的稀有金属，在研究中常用于激光器添加剂以吸收中子。原子序数'3；原子量5.9'；熔点82'=C；沸点,439=C；比重5.259；化合价2,3参见 element

来源：
After Europe
源自 Europe