| 释义 |
钾jiǎ金属元素,符号K(kalium)。银白色,质软。化学性质极活泼,容易氧化,燃烧时发出紫色光,遇水剧烈反应,放出氢气,同时燃烧起火。在工农业中用途很广。{potassium (K); soft, silver-white metallic chemical element that oxidizes rapidly when exposed to air, gives out purple light when burning, and emits hydrogen and burns at the same time when meeting water, widely used in industry and agriculture}? |