Warning: file_put_contents(): Only 0 of 6331 bytes written, possibly out of free disk space in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 osculation英英字典_osculation剑桥英语解释_osculation柯林斯英文解释_94生活常识网有道词典
1. N a point at which two branches of a curve have a common tangent, each branch extending in both directions of the tangent 密切点 (Also called tacnode)[maths]