concavities

[kɔn'kæviti]

[ concavities ]

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 |