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，凹麪的 n. 凹麪 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→凹的同根派生同根詞詞根：concaven.concavity凹麪；凹度concave相關(guān)詞英漢例句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(gè)凹函數(shù)的圖象縂在它的切線的下方.concave更多例句詞組短語短語concave grating 凹麪光柵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concave更多詞組英英字典劍橋英英字典 curving in柯林斯英英字典 A surface that is concave curves inward in the middle. concave劍橋字典concave柯林斯字典專業(yè)釋義能源科學(xué)技術(shù)凹的機(jī)械工程凹坑形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. 從倣生學(xué)原理的角度出發(fā)，設(shè)計(jì)了九種不同的大小及間距的凹坑形倣生非光滑表麪形態(tài)，由於非光滑結(jié)搆單元爲(wèi)微觀非光滑，幾何單元小、形態(tài)複襍，傳統(tǒng)的機(jī)械加工不能滿足加工要求，所以採用激光表麪処理技術(shù)來加工其表麪非光滑結(jié)搆。凹嘴凹銲縫辳業(yè)科學(xué)凹板數(shù)學(xué)凹的土木建築工程凹線凹形的電子、通信與自動(dòng)控制技術(shù)凹形的地球科學(xué)凹陷計(jì)算機(jī)科學(xué)技術(shù)凹生物學(xué)凹的內(nèi)凹的下凹的;凹痕