The influences of the maximum pressure, the average velocity and the slide - roll ratio on the yield thickness are discussed in detail.

本文还给出了用膜厚形式表示的屈服准则，并详细讨论了最大压力、平均速度和滑滚比对屈服膜厚的影响。

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The numerical solution of the equation describing the motion of the floating piston pin is obtained by bringing in the conception of friction force coefficient under slide-roll condition.

引入滚滑状况下的摩擦力系数，从而求得活塞销运动方程的数值解。

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So Samoa Air will let a few kilos slide, but the airline is unlikely to provide a refund if passengers roll up to the tarmac with a lighter load.

CNN: Pay-as-you-weigh airfares the 'next step'