Read Edit View history 发蓝 fālán to blue metal Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 发蓝/ 發藍 fālán 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 Edit Delete References Add reference same_as 发蓝/發藍 → 烤蓝/烤藍 Edit Delete same_as 发蓝/發藍 → 烧蓝/燒藍 Edit Delete same_as 烧蓝/燒藍 → 发蓝/發藍 Edit Delete
发蓝/ 發藍 fālán 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 Edit Delete