The acceleration-vibration level difference model was theoretically deduced and analyzed with four pole parameters method and then the vibration isolating effect of magneto-rheological(MR) mount with acceleration-vibration lever difference,which was measurable and easy to operate,was evaluated by the test.

We give a introduction to a few calculating methods on fall velocity of water drops athome and abroad at present.

A feasible Laser Doppler Velocimetry technique based on Amplitude Discrimmation has been used to determine the local gas and solids velocity simultaneously, which can lead to the local slip velocity between the gas and solids in a cocurrent downflow circulating fluidized bed (CDCFB).