The cause of vibration on the turbogenerator stator end winding is analyzed, and the meaning of natural frequency test and vibration measurement is discussed.
本文分析了引起汽轮发电机定子绕组端部振动的原因，以及固有频率试验和振动测量的意义。
Meanwhile, the modal analysis is used to test the detection arm's natural frequency and structural vibration modes, which provides a reference for the stability test of the bridge inspection vehicle.
同时对检测臂进行了模态分析，测出了其固有频率和结构振型，为检测车工作时的稳定性要求提供了参考。
This paper analyzed the phenomena in satellite vibration test that natural frequency decreases as excitation level increases.
针对卫星振动实验中的频率漂移现象进行了分析。
The wave force on the steel-pipe pile which was connected and unconnected to the test platform was tested; and the acceleration versus time data and natural vibration frequency were obtained.
对波流力作用下连接及未连接平台的钢管桩进行了测试，获得了加速度时程曲线以及钢管桩固有频率。
The wave force on the steel-pipe pile which was connected and unconnected to the test platform was tested; and the acceleration versus time data and natural vibration frequency were obtained.
对波流力作用下连接及未连接平台的钢管桩进行了测试，获得了加速度时程曲线以及钢管桩固有频率。
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