Using power spectral analysis, centennial and millennial-scale cycles of Paleo-monsoon were extracted. In the cycles, 71 a is the basic cycle of East Asian Monsoon.
应用功率谱分析的方法，提取出同时段百年尺度和千年尺度的古季风周期，其中71a周期为本文首次提出，并被认为是东亚季风活动最显著的基准周期之一。
Traditional speech signal processing is based on FFT power spectral analysis, in noisy condition, the spectrum of noise and speech signal are processed in the same way.
传统语音信号谱特征的提取是基于FFT 的能谱分析方法，在噪音环境情况下，对噪音的频谱成分与语音信号的频谱成分的处理采用“平均主义”的原则。
This paper briefly introduces the mathematical processing of ARM used in power spectral analysis of discrete time-histories data and confirms the usalitity of ARM in earthquake engineering.
本文扼要叙述了用于离散时程数据的功率谱分析的自相关回归法（ARM）的数学过程。
The power spectral density function of earthquake motion is usually used for the random response analysis of engineering structures in the frequency domain.
工程结构的随机地震反应分析，常在频域中用到地震动的功率谱密度函数。
The correlation between the standard classified road power spectral density (PSD) and international roughness index (IRI) was discussed by using regressive analysis.
通过回归分析的方法对标准分级道路功率谱密度与相应国际平整度指数之间的关系进行了研究。
Experimental results show that the radiant power spectrometer has high precision and wide spectral range, and it is of particular value in the fields of medical science, spectrum analysis and so on.
实验结果表明：光谱功率仪精度高、光谱范围宽，在医学研究、光谱分析等领域具有较高的实用价值。
Using modal and spectral analysis in ANSYS dynamic analysis, earthquake resistance analysis has been performed on 3d model of steel platform of air-cooling island in thermal power plant.
利用ANSYS软件动力分析功能中的模态分析和谱分析功能对火电厂空冷岛钢结构平台的三维模型进行地震波作用下的抗震分析。
The use of Fourier analysis techniques to measure the wavefront power spectral density (PSD) in mid frequency domain is discussed.
波前功率谱密度 （PSD）被用于评价惯性约束聚变激光驱动器光学元件在中频区域的波前误差。
The use of Fourier analysis techniques to measure the wavefront power spectral density (PSD) in mid frequency domain is discussed.
波前功率谱密度 （PSD）被用于评价惯性约束聚变激光驱动器光学元件在中频区域的波前误差。
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