Application of ultrasonic motor in gasoline generator

The application of regional dynamic control ultrasonic motor in gasoline generators Zhu Hua, Chen Zhihua, Zhao Yusheng (Nanjing University of Aeronautics and Astronautics, Nanjing 210016) The voltage output system, in, take the Gaussian distribution. The error rate of change and the membe

Hangzhou Longevity 520

Hangzhou Longevity 520

Today is a special day. The first thing that the world's two men and women who are pleasing to each other get up is to say to each other: 520, I love you! Then