acid anthracene brown dyes 酸性蒽棕染料
You know when Carrie dyes her hair dark brown in the first SATC movie after her split?
你知道carrie是在分手后她的第一部satc电影里把她的头发染成了金黄色吗？
The article presents a simultaneous determination method for three kinds of water-soluble dyes: acid red, acid brown and acid black by solving simultaneous equations using a UV-VIS spectrophotometer.
介绍了利用解联立方程组的方法，在紫外可见分光光度计上实现了对酸性红、酸性棕和酸性黑的混合染料中三种成分浓度的同时测定。
Brown cane sugar is free of additional dyes, chemicals, higher mineral content.
黑片糖不含人造色素、 化学添加剂， 但有丰富的矿物质。
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