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。
The efficiency of generating ozone decreases with the increase of input power.
当输入功率大于一定数值时，臭氧产生效率随输入功率的增加而降低；
After the separation of power plants and the power net, the electricity generating enterprises need to increase their management efficiency in order to achieve competitively in the market.
电厂、电网实施产权分离后，发电企业为了适应市场竞争，需要提高管理效率。
Increasing the efficiency with which we use energy, and moving to more environmentally responsible systems for generating power are also critical to sustaining improvement in our air quality.
提高能源使用效率和改用更具环保效益的发电系统，对持续改善我们的空气质素至为重要。
To improve the efficiency of wind power utilization, we employ more and more variable-pitch controllers and variable-speed constant-frequency (VSCF) controllers in wind-power generating systems.
风力发电系统为了更充分更有效的利用风能，越来越多的采用变桨控制系统和变速恒频控制系统。
To improve the efficiency of wind power utilization, we employ more and more variable-pitch controllers and variable-speed constant-frequency (VSCF) controllers in wind-power generating systems.
风力发电系统为了更充分更有效的利用风能，越来越多的采用变桨控制系统和变速恒频控制系统。
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