direct scarlet dye wastewater直接大红染料废水
direct blue dye直接蓝染料
direct fast dye直接耐晒染料;翻译
direct blue dye wastewater直接蓝染料废水
direct cotton dye直接染棉染料;直接棉染料
direct diazo dye翻译;直接重氮染料
direct red dye直接红染料
direct t dye直接染料
direct scarlet dye wastewater treatment直接大红染料废水
N（名词） any of a number of dyes that can be applied without the use of a mordant. They are usually azo dyes applied to cotton or rayon from a liquid bath containing an electrolyte such as sodium sulphate 直接染料