The results showed that the sulphide layer could improve the anti scuffing property of steel at low speed remarkably, and showed excellent friction reducing and wear resistant effects.

结果表明：在低速条件下渗硫层可显著改善钢表面的抗擦伤性能，且具有较好的减摩耐磨作用。

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The invention discloses an alloy coating bushing which comprises a steel backing layer, a substrate layer, a nickel grid layer and a friction-reducing layer which are sequentially arranged.

本发明公开了一种合金镀层轴瓦，包括依次设置的钢背层、基底层、镍栅层和减摩层。

youdao

Mizuno reckons that by reducing friction, keeping the flow orderly and delaying separation of the boundary layer, its new suits offer the average female swimmer 9.5% less drag than a conventional costume.

ECONOMIST: The turbulent world of swimming