This difference seems to be applied to explain the cause why the squeal only occurs in the end of the upward-stroke under reciprocating sliding.
这为解释往复滑动摩擦噪声只在向上行程末期发生的原因拓宽了视野。
参考来源 - 金属往复滑动条件下摩擦噪声与磨痕形貌关系的探讨·2,447,543篇论文数据，部分数据来源于NoteExpress
往复滑动的实验室评价方法能够用来定性评价涂层刀具的切削性能。
Therefore, the evaluation method with reciprocating sliding tests in laboratory can be used to characterize the cutting properties of coating tools.
对于往复滑动过程 ，在摩擦系数 -往复循环次数的关系图上一般有一个驼峰状的变化。
Generally, there is a hump-shape configuration in the relation between the friction coefficient and cycles under reciprocating sliding.
链结子为换向机构，具有滑动轴承功能，并联循环链和主传动链，把循环运动变为上下往复运动。承载链直接承受平衡载荷，可大幅度减小主传动链的受力。
The chain link is the reverse mechanism, functions as sliding bearing and makes the cycle chain and main drive chain parallel to change the circulation into reciprocation.
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