optical whiteness

基本解释

It has excellent optical character and pigment performance, high purity, whiteness, tint reducing power and dispersibility.
它具有優良的光學性質和顔料性能，純度高，白度，色彩還原能力和分散性。
It can be seen, then, that whiteness is directly determined through comparative ocular eye, whereas brightness refers to comparative optical reflectance.
由此可見，白度是指肉眼直接觀察的對比結果，而亮度則是指光學反射的對比結果。
blog.sina.com.cn
One of these parameters is ground whiteness which is obtained by first bleaching and another is optical whiteness process by optical brightening agent application.
其中一個蓡數是通過第一次漂白獲得的地色白度，另一個蓡數是通過應用熒光增白劑獲得的熒光白度工藝。