be.ryl.li.um
n.Symbol Be （名词）符号 Be A high-melting, lightweight, corrosion-resistant, rigid, steel-gray metallic element used as an aerospace structural material, as a moderator and reflector in nuclear reactors, and in a copper alloy used for springs, electrical contacts, and nonsparking tools. Atomic number 4; atomic weight 9.022; melting point ,278=C; boiling point 2,970=C; specific gravity .848; valence 2.See table at element 铍：一种高熔点、质轻、抗腐蚀、坚硬的青灰色金属元素，用作宇宙空间结构材料，如核反应器中的减速剂和反射体，铍铜合金用于制造弹簧、电接触器和无电花工具。原子序数4；原子量9.022；熔点,278=C；沸点2,970=C；比重.848；化合价2参见 element
来源：From beryl 源自 beryl
