convex是什么意思

convex

英 ['k?nveks] 美 ['kɑnv?ks]

convex 凸透鏡

con-, 強(qiáng)調(diào)。-vex, 同-vect, 攜帶，移動(dòng)，詞源同vector, vehicle. 即在拱頂匯集的，形成凸透鏡形狀的。

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.

1. I wouldn't say your stomach was big — it's just slightly convex.: 我不會(huì)說(shuō)你的肚子大——它只是有點(diǎn)凸出.

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).

4. Alternative characterization of concave and convex functions which is sometimes useful.: 對(duì)于凹函數(shù)和凸函數(shù)還有一個(gè)替補(bǔ)的表征,有時(shí)它是有用的.

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.