a substance yielding a dye or that can be used as a dye, especially when in solution
产生染料之物;染色剂;染料;染液。
n. 产生染料之物;染色剂;染料;染液
This dyestuff has a pungent smell.
这种染料有一股刺鼻的味道。
The manufacturer claims that their cloth is dyed with natural dyestuff.
厂家声称他们的布是用纯天然的染料染出来的。
Dyestuffs are often used in biomedical experiments.
在做生物医学实验时常会用到染色剂。
Dyestuff wastewater has much effect on environment.
染料废水对环境有很大的影响。
Never tested cancer dyestuff from what we used dyestuff.
各种不同性质的染料中也未检测出含有致癌染料。
Liquid sulfur dye is termly the leuco aqueous of sulfur dyestuff.
液体硫化染料系指硫化染料隐色体溶液。
The VAT dyestuff is a kind of important dyestuff used for cotton.
还原染料是一类重要的棉用染料。
Moreover, some azo dyestuff wastewater also bears chromium compounds.
同时,一些偶氮染料废水中也存在铬离子。
染料是有颜色的物质。但有颜色的物质并不一定是染料。作为染料,必须能够使一定颜色附着在纤维上,且不易脱落、变色。染料通常溶于水中,一部份的染料需要媒染剂使染料能黏着于纤维上。染料和色素吸收部份波长的光,所以看起来带有颜色。与染料比较,色素并不溶于水中,亦不会附着于其他物质上。考古资料显示,染色技术于印度和中东已有超过五千年历史。当时的染料从动植物或矿物质而来,甚少经过处理。大多数染料来自植物界(如植物的根、莓类、树皮、叶子和木料等),但此类染料甚少被广泛用于商业上。
a substance yielding a dye or that can be used as a dye, especially when in solution
产生染料之物;染色剂;染料;染液。