Friction of the ball to seat
球与阀座的摩擦力
Friction causes a rolling ball to stop finally.
摩擦力使得一只滚动得球最终停了下来。
Friction causes a rolling ball to stop finally.
摩擦力使得一只滚动的球最终停了下来。
The ball bearings reduce the friction on the joint.
滚珠可以减小结合处的摩擦。
Study on Sliding Friction Coefficient in Ball Bearing
球轴承滑动摩擦系数的研究
The object of using ball bearings is to reduce the friction.
使用滚球轴承的目的在于减少磨擦。
Monitoring Test of the Wear Conditions of Ball Bearing Rolling Friction Pairs
球轴承滚动摩擦副磨损状态的监测试验研究
Study on the Support Load of the Ball Friction Coupling Based on Hydrostatic Bearing
静压支承球铰副支承反力的求解
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。
This article introduced the design proposal of virtual friction moment measurement system of ball screw unit.
介绍了滚珠丝杠副摩擦力矩虚拟测试系统的设计方案。
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