The radial displacement must be accompanied by a circumferentialforce.
径向位移必须伴有圆周力。
2
The formula for calculating the rolling friction factor was developed and established. Based on the analysis of central force action, the formula for circumferentialforce action is developed.
在完成中心动力作用下的摩擦系数计算公式后，继续用计算法确定周动力作用下的滚动摩擦系数。
3
In general, the force will have both a radial and a circumferential component.