In this paper, we talk about the collection aperture's normalized arrival-of-angle fluctuation spectrum in Satellite-ground laser communication.
根据星地激光通信的实际状况，对接收孔径的归一化到达角起伏频谱进行了讨论。
For uniform time sampling, the level of frequency fluctuation will greatly influence the results of spectrum analysis.
采用等时隙采样方法，频率随机波动的大小则会严重影响谱分析的结果。
Results show that the frequency spectrum characteristics of arc diffluence is accordance to jet fluctuation. Arc diffluence in the new gun is confined obviously.
试验结果表明，电弧分流和射流脉动的频谱特性是一致的，在使用新等离子体喷枪时，电弧分流明显得到了限制。
Aiming at strip thickness fluctuation presently caused by roll eccentricity in cold rolling, a method of improving precision in spectrum analysis is proposed.
针对目前冷轧生产中因轧辊偏心引起带材厚度波动的问题，提出了一种提高轧辊偏心信号频谱分析精度的方法。
The spectrum of the tension fluctuation signals is also analysed, providing a basis for the design of tension testing sensors and tension signal collecting systems with microcomputers.
并对实测张力波动信号作了频谱分析，为设计张力传感器和微机张力信号采集系统提供了依据。
As the modulation of amplitude is dust particle, the fluctuation and peaks are shown in the power gain spectrum.
当振幅调制为灰尘颗粒时，功率增益谱出现起伏，并且产生尖峰。
The results show that there are several separated frequency sidebands in the intensity spectrum of the stacked pulse, responsible for the intensity fluctuation.
结果表明，在堆积脉冲的强度谱中存在一系列分立的频率边带，这些频率边带对强度起伏有贡献。
Venation wave spectrum analysis finds out shape-structure change of mid-frequency signal fluctuation.
脉络波谱图分析查明了中范围（频率）信号波动的形态结构变化。
The properties and components of pressure fluctuation signals in gas solid fluidized bed was dissected quantitatively by using power spectrum analysis, R/S analysis and chaos analysis.
应用功率谱分析、R/S分析、混沌分析等对气固流化床压力波动信号的性质、组成进行了定量解剖。
The single cylinder misfire can be also done by the frequency spectrum analysis of rotating speed fluctuation at both low and high speeds, but it can not be determined which cylinder is misfired.
利用瞬态曲轴转速波动进行时域分析可在低速时诊断出单缸熄火，在高速时由于波动的复杂性就难以做到。
In the power spectrum of the streamwise velocity fluctuation, the power intensity at low frequencies was larger and the power intensity at high frequencies was smaller than that for water.
在主流速度脉动能谱中，低频运动强度大于水流，而高频运动强度低于水流。
An envelope order spectrum based on multi-scale chirplet and sparse signal decomposition was proposed and applied to the fault diagnosis of gearboxes with rotating speed fluctuation.
提出了基于线调频基稀疏信号分解的包络阶次谱方法，并将其应用于变速齿轮箱故障诊断之中。
An envelope order spectrum based on multi-scale chirplet and sparse signal decomposition was proposed and applied to the fault diagnosis of gearboxes with rotating speed fluctuation.
提出了基于线调频基稀疏信号分解的包络阶次谱方法，并将其应用于变速齿轮箱故障诊断之中。
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