This felt thing there is just to avoid too much friction from building up with the plastic or to keep it slightly separated from the case.

这种毡制品只是为了消除与塑料产生太多的摩擦力，或者让它与外壳稍微分开。

youdao

This felt thing there is just to avoid too much friction from building up with the plastic or to keep it slightly separated from the case.

这种毡制品只是为了消除与塑料产生太多的摩擦力，或者让它与外壳稍微分开。

youdao

Revolving join is maddening that plastic of nanometer technique coat, in order to reduce the coefficient of friction for increased efficiency.

转动副采用纳米塑料薄层，减小摩擦系数，提高效率。

youdao

This little felt thing there is just to avoid too much friction from building up with the plastic or to keep it slightly separated from the case, but that's it. That's all there was to those things called floppy disks.

这种毡制品的目的是避免,由塑料组成所产生的摩擦力,或者保持稍微的距离，这就是我们要说的,软盘的全部内容。

哈佛公开课 - 计算机科学课程节选

Incipio left out this simple tiny detail, which not only creates friction when opening and closing but actually wears down the plastic there.

FORBES: Rapid Review: 5 Popular MacBook Air Cases