1 氢 H Hydrogen 26 铁 Fe Iron 2 氦 He Helium 27 钴 Co Cobalt 3 锂 Li Lithium 28 镍 Ni Nickel 4 铍 Be Beryllium 29 铜 Cu Copper 5 硼 B Borqianqian • |
ac120825libocheng • |
6dgyyds • |