This paper deals with the mechanism of the noise results from friction of motion. It also investigates primary influential factors and suggests a way to eliminate them.

本文论述滑动噪声的机理和影响滑动噪声的主要因素，并提出减少滑动噪声的途径。

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The slightest motion of a patient in bed creates friction between skin and sheets and results in loss of cells from the skin's outermost layer.

卧床病人最轻微的活动就会在皮肤和床单之间产生摩擦力，结果就会引起皮肤最外层脱落。

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The general low level of friction on ice allows a skater to glide along the surface smoothly without friction stopping the motion as soon as it's begun.

冰面上摩擦力通常较低，这使得滑冰选手一俟启动，就能不受摩擦力牵绊，顺畅滑翔冰面。

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Its two high-speed electric motors operate as one but can act independently (and incidentally, by using reverse torque instead of friction for braking, the motors convert the energy of your motion to help replenish the battery).

FORBES: A Standing Ovation