calcium是什么意思 calcium的用法 calcium怎么读
calcium
英 ['kælsɪəm]美 ['kælsɪəm]
n. [化学] 钙
使用频率:★★
星级词汇:★★★
记忆方法
1. 音译“钙”。中文词源
calcium 钙
来自词根calc, 小石子。词源同calculate.
英语词源
calcium
calcium: [19] Calcium was coined by the English chemist Sir Humphry Davy in 1808 on the basis of Latin calx ‘limestone’ (which is also the ancestor of English calcareous, calculate, calculus, causeway, and chalk). The Latin word probably came from Greek khálix, which meant ‘pebble’ as well as ‘limestone’.
=> calcarious, calculate, causeway, chalk
calcium (n.)
coined 1808 by English chemist Sir Humphrey Davy (1778-1829), who first succeeded in isolating it, from Latin calx (genitive calcis) "limestone" (see chalk (n.)) + metallic element ending -ium.
权威例句
1. Be sure you get your daily quota of calcium.
要确保每天的钙摄入量。
2. Calcium may aid in the prevention of colon cancer.
钙可能有助于预防结肠癌。
3. Milk products are an excellent source of calcium and protein.
奶制品富含钙与蛋白质。
4. Calcium is excreted in the urine and stools.
钙通过尿液和粪便排出体外。
5. Calcium reacts with water.
钙和水会发生化学反应。
[ calcium 造句 ]
