concave
音標(biāo)發(fā)音
- 英式音標(biāo) [?k??.ke?v]
- 美式音標(biāo) [?kɑ?n.ke?v]
- 國際音標(biāo) [k?n'keiv, 'k?nkeiv]
- 英式發(fā)音
- 美式發(fā)音
基本解釋
- adj. 凹的,凹面的
- n. 凹面
- v. 使變凹形
詞根記憶
- con(表加強(qiáng)) + cav(空的) + e→凹的
- con + cave(洞)→洞是凹進(jìn)去的→凹的
英漢例句
- The palm of one's hand is slightly concave.
人的手掌是微凹的. - The cloven hooves are sharp edged , elastic and concave.
蹄鋒利,呈凹形, 富有彈性. - 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. - The palm of one's hand is slightly concave.
人的手掌是微凹的. - The graph of a concave function is always below its tangent.
一個凹函數(shù)的圖象總在它的切線的下方.
詞組短語
- concave grating 凹面光柵
- concave slide [光]凹玻片;凹槽載片
- concave refractor 上凹折射層
- concave domain 凹型區(qū)域
- concave share 凹形犁鏵
短語
英英字典
- curving in
- A surface that is concave curves inward in the middle.
劍橋英英字典
柯林斯英英字典
專業(yè)釋義
- 凹的
- 凹坑形
Finally, the 3D geometry entity model of gear was got.2. From the view of bionics principle, nine kinds of bionic non-smooth concave surfaces with different sizes and distance of non-smooth units were designed.
2. 從仿生學(xué)原理的角度出發(fā),設(shè)計了九種不同的大小及間距的凹坑形仿生非光滑表面形態(tài),由于非光滑結(jié)構(gòu)單元為微觀非光滑,幾何單元小、形態(tài)復(fù)雜,傳統(tǒng)的機(jī)械加工不能滿足加工要求,所以采用激光表面處理技術(shù)來加工其表面非光滑結(jié)構(gòu)。 - 凹嘴
- 凹焊縫
- 凹板
- 凹的
- 凹線
- 凹形的
- 凹形的
- 凹陷
- 凹
- 凹的
- 內(nèi)凹的
- 下凹的;凹痕