铜绿层 tónglǜcéng patina Definitions Defs Origin Strokes Stroke Words Sentences Sents 铜绿层 銅綠層 tónglǜcéng patina a layer of green coating that forms on the surface of copper or bronze over time due to oxidation
铜绿层 銅綠層 tónglǜcéng patina a layer of green coating that forms on the surface of copper or bronze over time due to oxidation
