The ozone layer protects living things from harmful radiation of the ultra-violetray from the sun.
臭氧层是保护所有生物来自于太阳的有害辐射和紫外线。
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Water tank ultra violetray insect lamp . diaphram strainer anti osmosis treatment kitchen equipmcm laundry equipment radiogenic waste water treatment.
菌器薄膜过泸器逆渗透处理厨房设备洗衣房设备放射性废水处理。
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The lasers most people are familiar with are the green dots highlighting a PowerPoint presentation or the blue (actually closer to violet) light found in Blu-ray technology.