Aviation Dictionary
لایه رنگی که روی رنگ سوخته و رنگ پریده برای خنثی نمودن آن زده میشود
A coat of lacquer or dope in which some of the thinner is replaced with an equal amount of retarder. When this mixture is sprayed over a blushed surface, the thinner softens and restores the blushed material. The retarder slows the drying so the new film will not blush.