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。
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.
由于纳米材料具有很多独特的优点，因此纳米添加剂在摩擦学中得到了广泛的应用，最近又发现在噪声控制方面纳米添加剂具有一定的优势。
Nano-materials have a lot of excellence of specialty, so nanoadditives have a large application in tribology, recently the advantages of nanoadditives in control of noise have been found.
由于纳米材料具有很多独特的优点，因此纳米添加剂在摩擦学中得到了广泛的应用，最近又发现在噪声控制方面纳米添加剂具有一定的优势。
Nano-materials have a lot of excellence of specialty, so nanoadditives have a large application in tribology, recently the advantages of nanoadditives in control of noise have been found.
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