reactive adj. 1.反动的,倒退的,复古的。 2.反应的;反作用的;反冲的;【电学】电抗的;【化学】反应性的,活性的。 a reactive current 无效电流。 reactive power 无功电力。 reactivity n. adv. -ly ,-ness n.
dye vt. 染,染上,把…染色,给…着色。 dye a dress green 把衣服染成绿色。 A deep flush dyed her cheeks. 她的双颊染上一层绯红。 vi. 着色,上色,染上颜色。 This cloth dyes easily. 这种布容易上色。 be dyed in (the) grain [in the wool] 1.生染被染透。 2.〔比喻〕造成不可改变的结果。 dye well 好[不好]染。 n. 1.染料,染液。 2.染色;色调。 acid [alkaline, basic] dyes 酸性[碱性,盐基性]染料。 mordant [synthetic] dyes 媒染[合成]染料。 take dye well 容易染色。 (scoundrel) of the blackest [deepest] dye 穷凶极恶的(无赖)。 n. -ability 可染色性,可着色性。
In a reactive dye a chromophore contains a substituent that is activated and allowed to directly react to the surface of the substrate. Reactive dyes have good fastness properties owing to the bonding that occurs during dyeing.