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Perception Sound / Tunnel lights

Perception Sound
Perception Sound

The speed of wind is fast and the noise is heavy in tunnel,while,the Perception
Sound can generate electricity by wind and obsorbing the noise,it is ofstorage
battery as well.it is convenient for the electricity.


Yanshan University

Yanshan University
Qinhuangdao, China


Yanshan University

Yanshan University
Qinhuangdao, China

di Wang tianyu Li