针对城市照明系统，设计了一种基于交流斩波技术的新型城市照明节电器。
A new city lighting energy saver based on AC chopper technology for city lighting system was designed.
在城市照明系统中，如何节约能源，提高路灯能源的利用率已成为急需解决的问题。
How to save energy and improve lamp energy utilization have become urgent problems in urban lighting system.
他们说，在繁华大城市的中心，人群和过往车辆可提供足够的能量为整个城镇的街道照明或者为一个医院或学校提供供暖系统的动力。
They say the human and wheeled traffic in a busy city center could provide enough energy to light the streets of an entire town or power the heating system for a hospital or school.
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