摩擦力的英文：
friction

friction increases with increasing pretension
摩擦力随预加张力的增加而增加。

Static friction is greater than sliding fricton.
静摩擦力大于滑动摩擦力。

Drag suggests greater friction
drag暗指具较大摩擦力

Spikes provide greater traction.
钉鞋可提供更大的附着摩擦力。

The advantage of rolling bearings is that they cause less friction
滚动轴承的优点是它产生的摩擦力较小

The rougher the surface, the greater the friction.
物体表面越粗糙，产生的摩擦力越大。

We now discuss the case of a force that is proportional to the first power of the velocity.
现在，我们要讨论摩擦力与速度的一次幂成正比的情况。

The simple fact shows that the more of the force of friction is got rid of, the farther will the ball travel
这一简单事实表明，摩擦力越减少，球滚得越远。

There will be stray torques from the leads to the detector and some frictional forces from the bearings
接到探测器的导线和一些轴承摩擦力会产生杂散力矩。

There will be stray torques from the leads to the detector and some frictional forces from the bearings.
接到探测器的导线和一些轴承摩擦力会产生杂散力矩。

family friction
家庭的不和

These two countries have political friction.
这两国政治上失和。

The rougher the surface, the greater the friction.
物体表面越粗糙，产生的摩擦力越大。

We must distinguish sliding friction from rolling friction
我们必须把滑动摩擦同滚动摩擦区别开来。

political friction between two countries
两国间政治上的不和