美[kɑ:n?ke?v] 1 . The palm of one's hand is slightly concave .
人的手掌是微凹的.
來自《現代漢英綜合大詞典》
2 . The graph of a concave function is always below its tangent.
一個凹函數的圖象總在它的切線的下方.
來自辭典例句
3 . The cloven hooves are sharp edged, elastic and concave .
蹄鋒利,呈凹形, 富有彈性.
來自辭典例句
4 . Alternative characterization of concave and convex functions which is sometimes useful.
對于凹函數和凸函數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
1.凹的， 凹面的： 有如中空球體的內凹面的
