age coating meaning in Chinese

老化变黑层
老化覆层

Standard guide for assessing the condition of aged coatings on steel surfaces
钢表面老化涂层条件评定的标准指南
Star marine epoxy mastic ntc is a high build coating with excellent adhesion to rusted area and most aged coatings
本产品是厚浆型涂料，对锈蚀部分和大部分旧涂层具有优异的附着力。
Star maling epoxy mastic hold is a high build coating with excellent adhesion to steel , aluminium and most aged coatings
本产品是厚浆型涂料，对钢材、铝材和大部分旧涂层有非常好的附着力。
May be used over most aged coatings with good adhesion to the substrate , includeing organic and inorganic zinc primers , epoxy and other chem . ical cured coatings
适用于推荐底漆表面，在大部分旧涂层上拥有良好附着力，例如有机、无机富锌底漆、环氧以及其他化学固化型涂料。