假设转子的转速与其轴系本身的频率比较接近时，设备将会出现共振现象。
If the rotor speed is close to the frequency of the rotor system, the resonance phenomenon will occur.
对东方汽轮机厂生产的D29型机组低压转子的振动特性进行了分析，指出低压缸缸体在工作转速附近存在结构共振，并针对这个问题提出了现场的处理措施。
The LP rotor vibration of the D29 turbine unit was analyzed in this article, and point out LP cylinder was in structure resonance region around working speed, for this fault the measure was given.
而挠性转子在接近或超过其第一、二阶临界转速时，转子处于共振状态，这时动挠度达到很大的数值。
The dynamic deflection may become very large due to resonance in case of the flexible rotor speed approaching or exceeding its 1st or 2nd order critical speed.
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