求翻译：全球能源紧张，提高电器的效率是行之有效的方法。照明用电占据全球21%的总用电量，如果能提高照明用的的效率，可以有效缓解能源紧张。如何提高照明系统的能源利用率，延长照明系统的寿命，并且是绿色无污染的？取代白炽灯，荧光灯，节能灯的第四代照明灯具是什么？业界给出的答案就是LED灯照明。是什么意思？

The global energy crisis, improve the efficiency of electrical appliances is an effective method. Electricity for lighting accounted for 21 percent of the world's total electricity consumption can improve the efficiency of lighting, you can effectively ease the energy shortage. How to improve the en

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The global energy is intense, enhances the electric appliance the efficiency is the effective method.Lighting electricity occupies the global 21% total electricity consumption, if can enhance the illumination uses the efficiency, may alleviate the energy to be anxious effectively.How enhances the li

Global energy crisis, improve the efficiency of appliances is a proven method. Lighting takes up 21% per cent of total electricity consumption in the world, if you can improve the efficiency of lighting, can effectively relieve energy crisis. How to improve the energy efficiency of lighting systems,

正在翻译，请等待...