substantivity
n. 直接性;直染性;亲和力
例句
The results show that PF dyes possess low substantivity, high fixation, excellent stability and color fastness, wide process compatibility.
结果表明,PF型活性染料直接性小,固色率高,洗涤性能、色浆稳定性和色牢度好,且工艺的适应性和宽容性大。