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
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中英词源
potassium 钾
来自potash,钾碱，-um,化学元素。
potassium (n.)
metallic element, 1807, coined by English chemist Sir Humphrey Davy (1778-1829) from Modern Latin potassa, Latinized form of potash (q.v.). Davy first isolated it from potash. Symbol K is from Latin kalium "potash," from Arabic al-qaliy "the ashes, burnt ashes" (see alkali).
词态变化
权威造句
1. These chemicals modulate the effect of potassium.
这些化学物质可以调节钾的功效。
来自柯林斯例句
2. Fruits, vegetables, and wholegrains are rich in potassium.
水果、蔬菜和全谷物富含钾元素。
来自柯林斯例句
3. No potassium did we find in this mineral.
在这种矿石中我们没有发现钾.
来自《简明英汉词典》
4. The potassium content of foodstuffs is very variable.
食物中钾的含量差别很大。
来自辞典例句
5. Gunpowder is composed of sulfur, carbon, and potassium nitrate.
