Warning: file_put_contents(): Only 0 of 7310 bytes written, possibly out of free disk space in /www/wwwroot/ndsq.cn/index.php on line 55 centre of curvature英英字典_centre of curvature剑桥英语解释_centre of curvature柯林斯英文解释_开心英文字典_柠咚词
1. N the point on the normal at a given point on a curve on the concave side of the curve whose distance from the point on the curve is equal to the radius of curvature 曲率中心