a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite
potassium的用法和樣例:
例句
用作名詞 (n.)
The components of a potassium cycle vary greatly. 鉀素循環的各個環節有很大的變化。
What fruit vegetable contains potassium most? 什麼水果蔬菜含鉀最多?