发蓝 fālán to blue metal Definitions Defs Origin Strokes Stroke Words Sentences Sents 发蓝 發藍 fā//lán to blue metal to apply a protective chemical coating to steel or iron parts through heat treatment; creates a thin oxide film that prevents rust and improves appearance Cross-References Same as 烤蓝 kǎolán烧蓝 shāolán
发蓝 發藍 fā//lán to blue metal to apply a protective chemical coating to steel or iron parts through heat treatment; creates a thin oxide film that prevents rust and improves appearance Cross-References Same as 烤蓝 kǎolán烧蓝 shāolán
