Finally, the total friction force of the PSS is measured.
最后，对系统的摩擦力进行了测试。
The friction force is each meshing point cut off resistance.
摩擦力就是各个啮合点被剪断时的阻力。
By friction is meant a force opposing motion.
摩擦力指的是阻碍运动的一种力。
This force, which we call friction, always opposes motion.
这种总是阻碍运动的力我们称之为摩擦力。
This force, which we call friction, always opposes motion.
这种总是阻碍运动的力我们称之为摩擦力。
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