磁悬浮不依赖于车轮在轨道上的摩擦力。

Maglev doesn't rely on the friction of wheels on track.

youdao

风向在城市里也会改变，因为建筑物增加了它们周围流动的空气的摩擦力。

Wind movements are also modified in cities because buildings increase the friction on air flowing around them.

youdao

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。

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.

youdao

That means the force you're applying is cancelled by another force, which has got to be the force of friction.

意味着你施加在物体上的力被另一个力抵消了,这个力就是摩擦力

耶鲁公开课 - 基础物理课程节选

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