curvature

详细解释:n. 弯曲, 曲率
【医】 弯, 曲

英语解释：

名词 curvature:

(medicine) a curving or bending; often abnormalthe rate of change (at a point) of the angle between a curve and a tangent to the curvethe property possessed by the curving of a line or surface同义词：curve