词典论坛联络

Google | Forvo | +

element of group 0

环境 élements du groupe 0
element of group 0 A group of monatomic gaseous elements forming group 18 (formerly group 0) of the periodic table: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn)
环境 élements du groupe 0

增加 | 报告错误 | 获取短网址