A lot of study showed that the friction of the ball friction coupling between piston and slipper obviously affected the life-span and the performance of the axial piston pump.

大量的研究表明，柱塞与滑靴之间的球铰副摩擦力很大程度上影响着轴向柱塞泵的性能及寿命。

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The coupling agent can evidently increase impact strength of the composite. Coupling agent, lower the hardness and friction coefficient o…

这种偶联剂使复合材料的抗冲击强度明显提高、硬度降低、耐磨性有较大的提高而摩擦系数略有降低。

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Assembly method for the Optic is designed and the solution for problem about positioning and aligning of the contact coupling and trapped friction which affect the figure are put forward.

针对物镜光学元件装配过程中接触副定位对准精度、接触过程中残余摩擦力对面形的影响等问题提出了解决方案。

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