N-COUNT A topcoat is a coat that you wear over your other clothes. 外套
N-VAR A topcoat is the final layer of paint or varnish that is put on something. Topcoat is the type of paint or varnish that you use for the final layer. Compare . 外涂层漆
Coal tar bleed-through is likely with most topcoats.
复涂以大部分面漆时，很可能发生沥青渗色。
Liquid spray coatings continue to be used on heat sensitive products and as high-gloss topcoats.
流体喷涂用于热敏感性产品和高光外层。
Black aqueous topcoats, With the brightness and blackness of best. Applied to all kinds of leather.
高光黑色水性处理剂，具有优异的黑度和亮度，适用于各种皮料。
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