短語(yǔ)詞組短語(yǔ)sulfide blackening 硫化黑變blackening blacken 使變黑blackening surface 板麪發(fā)黑blackening g 染黑法bulb blackening 燈泡變黑;玻殼黑化blackening bath 加厚液wet blackening [化工]塗炭粉漿 返回 blackening