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在试验基础上，阐述了振动床及振动流化床中振动能的输入方式.对于振动床，振动能输入方式是振动床体对粉体床层的碰撞.对于振动流化床，振动能输入方式是振动波在流化床悬浮体中的连续传播，床层特性影响波的传播特性.通过压力波动的频谱分析，可以考察床层中的气泡行为.
On the basis of the experiment, the input method of vibration energy in vibrating bed and vibrating fluidized bed is described. For vibrating bed, the vibration energy input mode is the collision of vibrating bed body with powder bed. For vibrating fluidized bed, vibration energy input The way is the continuous propagation of vibrational waves in a fluidized bed suspension and the bed characteristics affect the wave propagation characteristics.The bubble behavior in the bed can be examined by spectral analysis of pressure fluctuations.