impact rub

• 碰摩

impact rub的用法和样例：

例句

1. And the friction coefficient of the rub has a good effect on the absorber effect of the system too.A large friction coefficient can make the system to work more steadily.
   碰摩摩擦系数对系统的减振同样有很好的效果，较大的摩擦系数能够使系统更平稳地工作。