实际的振动波形表明，机组的振动信号具有非平稳性，其波形具有分形特征。
In fact, vibration wave shows that vibration signal of power sets is non-stationary and has fractal characteristics.
针对各种不同的结构连接形式和振动波形，分别推导了各种节点单元矩阵的表达式。
The joint element matrix equations were developed for various structural configurations and wave types.
给出了一种用于连铸生产的非正弦振动波形，并对其波形参数和振动工艺参数进行了讨论。
A waveform of non sinusoidal oscillation for continuous casting is given. The relations between the waveform parameters and oscillation process parameters are discussed.
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