valence
英 ['ve?l(?)ns]
美 ['vel?ns]
- n. [化學(xué)] 價；[化學(xué)] 原子價；[化學(xué)] 化合價；效價
- n. (Valence)人名；(法)瓦朗斯
助記提示
1、val- "be strong" + -ence.
2、字面含義：strength, capacity, combining power of an element.
3、化學(xué)里面的“價”好像就是容納電子的能力、本領(lǐng)吧。
英文詞源
- valence (n.)
- early 15c., "extract, preparation," from Latin valentia "strength, capacity," from valentem (nominative valens) "strong, stout, vigorous, powerful," present participle of valere "be strong" (see valiant). Meaning "relative combining capacity of an element" is recorded from 1884, from German Valenz (1868), from the Latin word. Related: Valency.
雙語例句
- 1. Hydrogen is a one - valence element.
- 氫是一價的元素.
來自《現(xiàn)代漢英綜合大詞典》
- 2. Valence is a sleepy little town just south of Lyon.
- 瓦朗斯是里昂南面一座寂靜的小鎮(zhèn)。
來自辭典例句
- 3. Every element tends to satisfy both its primary and secondary valence.
- 每一元素傾向于既滿足它的主價又要滿足它的副價.
來自辭典例句
- 4. A closely related concept is that of free valence.
- 一個密切有關(guān)的概念是自由價.
來自辭典例句
- 5. The valence atom of an alkali - metal atom has two states.
- 堿金屬原子的價原子具有兩種能態(tài).
來自辭典例句