topcoat
noun [ C or U ] uk/ˈtɒp.kəʊt/ us/ˈtɑːp.koʊt/
(油漆的)外涂层;外涂油漆
a final layer of paint put onto a surface over another layer, or the type of paint used to do this
Compare: undercoat
See also: coat noun (COVER)
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