the results shown that the relation between axial load of bearing and friction torque is not monotonic function but periodical variation.
结果表明,轴承的轴向载荷与摩擦力矩之间不是单调上升的函数,而是呈周期性变化的关系。
in this paper, of which the middle between the points and there exists strictly monotonic function of the inverse function of the nature of some average of two different positive export.