‘镀银’ (dù yín) is a verb meaning ‘to silver-plate’ — the process of applying a thin, protective, and decorative layer of silver onto the surface of another metal, such as copper, brass, or stainless steel. The first character 镀 (dù) means ‘to plate’ (a general term for electroplating or coating metals), while 银 (yín) specifically means ‘silver’. Together, they form a compound verb describing this precise metallurgical technique.

This term is commonly used in manufacturing, jewelry making, tableware production, and restoration work. It implies both functional benefits — like improved corrosion resistance and electrical conductivity — and aesthetic enhancement. Unlike solid silver items, silver-plated objects are more affordable and lightweight, making ‘镀银’ especially relevant in industrial and consumer goods contexts, including cutlery, mirrors, electronics components, and decorative hardware.