ooptical bleaching agent
光学漂白剂
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Ooptical bleaching agent: a chemical which is used in the furnish of bright-white papers to enhance their brightness, and which does so by converting ultra-violet light into visible light.
光学漂白剂：混入造纸浆料内，增加光白纸张的白度的化学剂；它的作用是使紫外光转为可见光。
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