对离心式多级叶轮风机进行振动频谱分析，认为叶轮存在动不平衡，造成风机振动超标。
The vibrating spectrum analysis was done to centrifugal multi-level impeller blower, and found that the impeller has dynamic unbalance, so that the vibration of blower is to exceed the standard.
对振动超标的悬辊式旋风磨机进行了振动分析，建立了反映磨机运动的非线性微分方程；
Vibration analysis has been made for a hanging roller blast pulverizer which runs over the vibration standard and its motion equation is a nonlinear differential equation.
这种类型的泵在调试和运行过程中均出现过电机或泵体振动超标的故障，严重影响设备运行可靠性和核电厂安全性。
In the commissioning and operation, these pumps have all appeared excess vibration, which would debase pumps' operation reliability and nuclear plants' security.
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