镀铜 dùtóng copper plating Origin Definitions Defs Strokes Stroke Words Sentences Sents 镀 鍍 dù nounverb to plate to plate or overlay a metal or object with a thin layer of another metal (such as gold or silver) through electrolysis or other chemical methods铜 銅 tóng noun copper copper (chemical element Cu); also used to refer to bronze and other copper alloys