The cleaning device can maintain the clean surface of the solar cells, improve the power generating efficiency and prolong the service life of the cells.
清洗装置能保持清洁的太阳能电 池表面，提高发电效率，延长电池的使用寿命。
The trend of wind power generation is to improve the economic performance of the unit, to improve the level and efficiency of single generation capacity, reduce unit costs and generating costs.
风力发电的趋势是进步机组的经济性，进步单机的发电容量等级和效率，降低单位造价及发电本钱。
Diesel generating set had become the preferred backup or emergency power because of these characteristics: tight structure, small size, thermal efficiency, rapid start, flexible control.
柴油发电机组以其结构紧凑、占地面积小、热效率高、起动迅速、控制灵活等特点成为备用电源或应急电源的首选。
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