| 释义 |
〔barium〕A soft, silvery-white alkaline-earth metal, used to deoxidize copper and in various alloys. Atomic number 56; atomic weight 137.34; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2. See table at element 钡：一种柔软，银白色的碱土金属，用来还原铜并用于各种合金。原子序数56；原子量137.34；熔点725°C；沸点1,140°C；比重3.50；化合价2 参见 element |