concavity
[kɔn'kæviti]
n.中央凹陷, 凹洼,凹状
例句与用法：
A long stick with a concave attachment at one end for shoving disks in shuffleboard.
推铲一端带有凹头的长棒，用于在打圆盘游戏中推动圆盘
A concave molding with a cross section that approximates a quarter circle.
飞檐的凹圆线脚截面近于九十度弧的凹线脚
An indented or concave surface or area.
凹陷，洼地凹的表面或地区
His figure looks very funny in the concave mirror.
他的样子在凹镜里显得非常可笑。
词形变化：
名词复数: concavities |
详细释义：
n.
凹; 凹面