The pistons are graphite-coated to reduce friction.

活塞表面涂有石墨以减少摩擦。

《柯林斯英汉双解大词典》

On the edge of the paper to reduce friction, that is, reduce mechanical wear and tear, and the durability of the tool itself.

刀与纸边的磨擦力减少，即减少对机械的磨损，而刀本身的耐用性更强。

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Because of their ability to reduce friction and wear, they are usually used as the material for making the worm wheel in a worm gear set.

由于具备减摩性和耐磨性的性能，它们通常用来制作涡轮减速器中的涡轮。

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The purpose, he says is they need to reduce friction from adding photos to Twitter.

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But if the building is well pivoted to reduce friction, that requires surprisingly little power.

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The goal is to reduce friction with host nations, the kind that results from accidents and other problems relating to local sensitivities.

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