Warning: file_put_contents(): Only 0 of 4936 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/28094.com/index.php on line 55 surface friction drag英英字典_surface friction drag剑桥英语解释_surface friction drag柯林斯英文解释_贰靶汉英词典
1. N the part of the drag on a body moving through a fluid that is dependent on the nature of the surface of the body 表面摩擦阻力 (Also called skin friction)