Based on the theoretical research and prototype fabrication of traveling wave type ultrasonic motor, the traveling wave type ultrasonic motor used for lifting glassforvehiclewindow is developed.
在超声波电机理论研究和样机制作的基础上，开发了用于汽车车窗玻璃升降的行波型超声波电机。
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Inspection on windowglass maintenance device is one of the common works forvehicle servicemen. The author introduces the maintenance and inspection of electric wiper and rear window defogger.