The gallic acid hair dye is used for black-dyeing of human hair.
该没食子酸染发剂用于人发的染黑。
He caught me gazing at the thick black spiky forest matting his head. "I've been dyeing it for years" he said.
看到我注视着他头上又黑又密的直发，他说：“我染发已经有很多年了。”
Pop-up clothes dyeing centers are a new phenomenon in the Thai capital as black apparel becomes too expensive for many following the death of King Bhumibol Adulyadej.
泰国国王普密蓬·阿杜德去世后，黑色衣服对很多人来说变得过于昂贵，于是突然出现的染衣中心成了泰国首都的一个新现象。
White chalk ashes fall in the classroom dyeing your black hair white but washing off our gaudiness making our youth more luxuriant ly green.
白色的粉笔灰，一阵阵地飘落在教室里，它染白了您的黑发，却洗尽了我们身上的浮华，将我们青春的绿色映衬得更加繁茂。
White chalk ashes fall in the classroom dyeing your black hair white but washing off our gaudiness making our youth more luxuriantly green.
白色的粉笔灰，一阵阵地飘落在教室里，它染白了您的黑发，却洗尽了我们身上的浮华，将我们青春的绿色映衬得更加繁茂。
His employer says the dyeing station will stay open until the end of the month and people can also donate old clothes to be dyed black.
他的老板表示，这个扎染中心将一直开到这个月底，人们也可以捐赠旧衣服来染黑。
The existing methods of zinc plating blackening by black passivating, coloring, dyeing, etc. are studied, and the high resistance to corrosion of the passivator is highlighted.
综述了镀锌层黑钝化、着色、染色等黑化处理的方法，重点研究了高抗蚀的黑钝化处理。
The chemical structure and production cost of vat black BBN and vat black DB are analyzed. The process conditions of yarn dyeing with these two dyes are introduced as well as the attentions in dyeing.
分析了还原黑BBN和还原黑DB的结构特点和生产成本，具体介绍了纱线染色的工艺条件，以及染色过程中需注意的事项。
The dyeing characteristics of Leather Black LR-V are studied and the penetration property of different dyestuffs are investigated by leather chromatoplate.
研究了被认为是无致癌性无禁用偶氮染料皮革黑LR V的染色性能，用皮革色谱板对比研究了染料的渗透性。
A new water-soluble sulfur black was applied in dyeing of cotton textile. The dyeing methods were studied and colour fastnesses of the dyed cotton were tested.
用含有葡萄糖基的新型水溶性硫化染料在纯棉织物上进行应用，研究了染色方法并测试了染色牢度。
The dyeing properties of new non-azo dye (Leather Black LR-N) for leather were studied by Color Difference analysis and UV-Vis spectroscopy.
本文利用色度色差分析及紫外可见吸收光谱等研究了非偶氮皮革专用新型染料一皮革黑LR-N的染色性能。
Problems such as not black enough when blackened in leather dyeing" could be solved with the help of rare_earth dyeing auxiliary and repeatable dyeings."
借助于稀土助染和复染可以解决皮革染色中存在的染黑不黑的问题。
Problems such as not black enough when blackened in leather dyeing" could be solved with the help of rare_earth dyeing auxiliary and repeatable dyeings."
借助于稀土助染和复染可以解决皮革染色中存在的染黑不黑的问题。
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