concave
英 ['k?nke?v]
美[kɑn'kev]
- adj. 凹的，凹面的
- n. 凹面
- vt. 使成凹形
IELTSGRETOEFL暢通詞匯
中文詞源
concave 凹狀
con-, 強調。-cave, 洞穴。洞穴狀的，凹進去的。
英文詞源
- concave (adj.)
- early 15c., from Old French concave (14c.) or directly from Latin concavus "hollow, arched, vaulted, curved," from com-, intensive prefix (see com-), + cavus "hollow" (see cave (n.)).
雙語例句
- 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
