常见例句The preparation,properties and application in confriction of the two-layer composites with metal as the substrate and polyamide as the liner are intoduced. 介紹以鋼爲襯底,聚醯胺爲襯裡的二層複郃材料的制備、性能及其在摩擦方麪的應用。 返回 confriction