流体运动的不稳定性造成压力冲击，引起管道与设备振动。
Unsteady flowing has pressure lash, it can cause the quake of pipe and equipment.
高温、高压、高压差的蒸汽调节阀中的流动不稳定导致异常的振动，造成阀门的磨损及阀杆破坏以及流动中的压损。
The unsteady flow in the high pressure steam valve cause unusual vibration, the valve pole to be destroyed, the pressure while flowing to be lost, etc.
通过对某机组运行中发生的不稳定振动进行分析，结合现场数据，诊断出了振动故障。
The vibration malfunction was diagnosed through the analysis of unstable vibration in the operation of a unit and the field data.
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