convex
英 ['k?nveks]
美['kɑnv?ks]
- adj. 凸面的；凸圓的
- n. 凸面體；凸狀
TEM4GRETOEFL擴展詞匯
詞態(tài)變化
名詞:?convexity;
中文詞源
convex 凸透鏡
con-, 強調(diào)。-vex, 同-vect, 攜帶，移動，詞源同vector, vehicle. 即在拱頂匯集的，形成凸透鏡形狀的。
英文詞源
- convex
- convex: [16] Convex was borrowed from Latin convexus, mainly an architectural term meaning ‘a(chǎn)rched, vaulted’. The element -vexus probably came from vehere ‘carry’ (source of English vehicle), the notion being that vaults are ‘carried together’ (Latin com- ‘together’) to meet at a point at the centre of a roof, although some have speculated that it is related to Latin vārus ‘bent, knock-kneed’ (source of English prevaricate).
=> vehicle, vex - convex (adj.)
- 1570s, from Middle French convexe, from Latin convexus "vaulted, arched," past participle of convehere "to bring together," from com- "together," or "thoroughly" (see com-) + vehere "to bring" (see vehicle). Possibly from the idea of vaults carried together to meet at the point of a roof. Related: Convexity. Convex lens is from 1822.
雙語例句
- 1. I wouldn't say your stomach was big — it's just slightly convex.
- 我不會說你的肚子大——它只是有點凸出.
來自《簡明英漢詞典》
- 2. Its convex border should project far into the right lower lung field.
- 其凸出緣應(yīng)深深地突入右下肺野內(nèi).
來自辭典例句
- 3. A convex lens is used to concentrate rays of light.
- 凸透鏡用于聚集光線.
來自辭典例句
- 4. Alternative characterization of concave and convex functions which is sometimes useful.
- 對于凹函數(shù)和凸函數(shù)還有一個替補的表征,有時它是有用的.
來自辭典例句
- 5. In adults its contour may be straight, slightly concave or slightly convex.
- 成人肺其形狀可以是直的, 輕微凹下或輕度突出.
來自辭典例句