drag of film

• 薄膜的阻力

drag of film的用法和样例：

例句

1. The dispenser's wake affects the drag of the submunition acutely.
   布撒器尾迹对子弹的阻力有很大影响。
2. An aircraft has to overcome the resistance of the air.
   飞机须克服空气的阻力。