Warning: file_put_contents(/home/www/wwwroot/tjuzi.com/cache/707057504cad9302db2da26e5d40237b.txt): failed to open stream: No space left on device in /home/www/wwwroot/tjuzi.com/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_橘子化妆朗文词典
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