咖啡渣还是天然染色剂，可以用于头发，纸张，纺织品和木制品染色。
Use them as a natural dye for your hair, paper, fabric and wood.
叙述了造纸工业常用的几种染料的基本特性和应用技术，列举了几种纸张实际生产的染色工艺，并展望了液体染料在造纸工业的应用前景。
Characteristics and application technology of dyes being used in the paper industry were discussed. A few paper dyeing technology given. The application prospects of liquid dyes outlined.
纸张的颜色比丝布的颜色要浅，所以这样的酸性环境“染色浴”，相对于化合纤维，确实在蛋白纤维上更起作用。
The paper was a paler colour than the silk so it is definitely correct that this acid-dye bath method works better on protein than cellulose.
纸张的颜色比丝布的颜色要浅，所以这样的酸性环境“染色浴”，相对于化合纤维，确实在蛋白纤维上更起作用。
The paper was a paler colour than the silk so it is definitely correct that this acid-dye bath method works better on protein than cellulose.
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