Both frequency-power spectrum method and perimeter-area method are suitable for the analysis of fractal characteristics of sapling patch shape.
频谱法和周长-面积法都适用于分析幼树斑块形状的分形特征。
A new approach to measure the long cylindrical particle by using the laser diffraction power spectrum method is presented in this paper in detail.
提出了用激光衍射功率谱方法测量柱形颗粒群直径分布的技术方法。
In signal processing field, the spectrum correlative technology has more advantages than the conventional power spectrum method, because the latter includes less information.
在信号处理中，传统的功率谱分析方法包含的信息量少，谱相关方法较前者具有更多优点。
The data of polar motion, rotation of the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.
本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。
The data of polar motion, rotation of the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.
本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。
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