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).
雙語例句
1. These chemicals modulate the effect of potassium.
這些化學物質(zhì)可以調(diào)節(jié)鉀的功效。
來自柯林斯例句
2. Fruits, vegetables, and wholegrains are rich in potassium.
水果、蔬菜和全谷物富含鉀元素。
來自柯林斯例句
3. No potassium did we find in this mineral.
在這種礦石中我們沒有發(fā)現(xiàn)鉀.
來自《簡明英漢詞典》
4. The potassium content of foodstuffs is very variable.
食物中鉀的含量差別很大。
來自辭典例句
5. Gunpowder is composed of sulfur, carbon, and potassium nitrate.