friction

n.摩擦；摩擦力；分歧

Constant friction wore out the heels of my shoes. 不断的摩擦磨损了我的鞋跟。

Matches are lighted by friction. 火柴由摩擦而生火。

Friction lowers the efficiency of a machine. 摩擦减低机器的效率。

Friction causes a rolling ball to stop finally. 摩擦力使滚动的球最终停了下来。

I oiled the machine to reduce friction. 我把机器上油,以减少摩擦力。

My daughter and son always have frictions. 我女儿和儿子总发生矛盾。

There is some friction among the family members. 家庭成员间有些摩擦。

adj.摩擦的；由摩擦而产生的

差距

adj.无摩擦的；光滑的

n.减摩设备

adj.减摩的