英语翻译滑动摩擦力总是比最大静摩擦力要小.它由垂直于摩擦面的力FN和滑动摩擦系数µ决定,它与滑动面之间的相对

Sliding friction force is always smaller than force of maximum static friction.It is decided by normal force FN and sliding friction coefficient µ,and has no reference to relative velocity and area between the sliding surfaces.Friction coefficient is determined by substance,roughness concentration and lubricant (may exist) of the sliding surfaces.
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The friction sliding always is smaller than maximal stiction. It rubs force FN soft and floury and friction coefficients & micro sliding from perpendicularity Yu; Decision , it have nothing to do with...

Sliding friction force than the maximum static friction force is always smaller. It is perpendicular to the surface friction force FN and the sliding friction coefficient μ decided that between it and...