In order to precede resisting-ultraviolet treatment, at first analyzing some characteristics of colored cotton, including its physics performance and chemical property.

为了对天然彩色棉进行抗紫外线处理，首先分析了彩色棉自身的一些特点，包括它的物理性能和化学性能。

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ULTRAVIOLET light has long been used in water-treatment plants to help with disinfection.

紫外线消毒灯一直被用于水处理厂。

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The ultraviolet ray disinfection and the ultraviolet ray assistance senior oxidation technology in the water treatment is gradually taken care by people.

紫外光消毒和紫外光辅助的氧化技术在水处理中是一项逐渐被人们重视的技术。

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In other words it requires treatment with chemicals, or illumination with ultraviolet light, in order to make it visible enough to work with and, even then, it is often indistinct.

ECONOMIST: Fingering fingerprints | The