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1·The abraded surface shall extend at least 25mm (1 inch) beyond the coated area.

磨面应至少扩展到涂敷区域外25毫米(1英才)。

2·Using SEM, the abraded surface of two kinds of liner plates and one paddle have been investigated.

使用SEM电镜，对两种材质的衬板及一种材质的叶浆头的磨损面进行了观察分析。

3·If the time between coats exceeds the recommended maximum, the surface shall be abraded prior to applying an additional coat.

如果在相邻涂层操作的间隔时间超过推荐的最小值，则表面应在补涂之前进行打磨。