banned azo colourants

• 禁用偶氮染料

banned azo colourants的用法和样例：

例句

1. Meanwhile, a thin-layer chromatography for detecting those prohibited azo dyes in textiles is presented.
   同时介绍了用薄层色谱分析法检测纺织品中禁用偶氮染料的方法。