Based on the theoretical research and prototype fabrication of traveling wave type ultrasonic motor, the traveling wave type ultrasonic motor used for lifting glass for vehicle window 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 window glass maintenance device is one of the common works for vehicle servicemen. The author introduces the maintenance and inspection of electric wiper and rear window defogger.

雨雾天气，汽车电动刮水器和后窗玻璃除雾器对于保证驾驶员具有透明的视野以及保障行车安全具有决定性作用，因此应当加强其维护与检修。

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