Optical brightener(Optical brightness agent): Synonymous with Opticalbleaching agent.
光学增光剂：即光学漂白剂。
2
One of these parameters is ground whiteness which is obtained by first bleaching and another is optical whiteness process by optical brightening agent application.
其中一个参数是通过第一次漂白获得的地色白度，另一个参数是通过应用荧光增白剂获得的荧光白度工艺。
3
The irradiation caused an optical degradation of the coatings. And an air bleaching phenomenon of the degraded coatings was observed.