针对现有电力系统非整数次谐波分析法的不足，提出了一种改进的希尔伯特振动分解(HVD)方法。
An improved Hilbert vibration decomposition (HVD) method was introduced to the non-integer harmonic analysis in electrical power system.
采用特伦逆向反射装置，消除它在位移或振动过程中因偏摆或横移所带来的影响，使测量灵敏度和精度提高约一倍。
Trent reverse reflection device is adopted to offset the effect caused by beat and cross sliding during displacement or vibration and to enhance measurement sensitivity and accuracy nearly one time.
对自由振动圆柱后尾迹中的湍流普朗特数进行了实验研究，并与刚性柱体尾迹的结果作了比较。
Turbulent Prandtl number of wakes generated by a free vibrating cylinder were investigated experimentally, and results were compared with those of rigid cylinder wakes.
介绍一种双活塞对置直线驱动斯特林制冷机，它具有振动小、结构紧凑、噪音低、可靠性高等特点。
Stirling cryocoler with two opposite pistons driven linearly is described in the paper, The crycooler has the characteristics of small vibration, compact structure, low noise and high reliability.
建议了一种基于复解析小波变换的瞬时频率分析齿轮故障振动信号的方法。 该方法将希尔伯特变换与小波变换相结合，具有自适应分析能力。
A method using transient frequency based on complex-analytical- wavelet-transform, which combines Hilbert transform with wavelet transform and possesses adaptive analytical ability, is proposed.
希尔伯特-黄谱可以将机械振动信号分解为有限的模式，然后以时频方式揭示机械的运行状况；
The Hilbert-Huang spectrum can decompose the mechanical vibration signal as finite modes, then disclose the running status of machinery by the means of time-frequency;
希尔伯特-黄谱可以将机械振动信号分解为有限的模式，然后以时频方式揭示机械的运行状况；
The Hilbert-Huang spectrum can decompose the mechanical vibration signal as finite modes, then disclose the running status of machinery by the means of time-frequency;
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