In concentric with the shaft of the plate to lay on a finite length solenoid power, the edge of the plate with a number of symmetrical fixed charged metal ball.
在该盘上与转轴同心地放着一有限长的通电螺线管，在盘的边缘均匀对称固定着若干带电金属小球。
2
The thickness of 5mm glass plate, plateedgefixed, and transparent silicone enhanced.
平板玻璃，钢板镶边固定，并用透明硅胶增强粘固牢度；
3
The symmetric and unti -symmetric free vibration problems of thick plate with the fixed and simple support edge conditions are solved.