The analytical and experimental results are very useful for the rational use of Fourier spectrum analysis system.
文中的分析与结论对频谱分析系统的正确使用具有指导意义和实用价值。
The Fourier spectrum of the wave moment shows that high frequency components will appear and they may cause ringing.
分析结果表明，极端波浪作用下的波浪力矩包含高频成分，是结构物可能产生高频共振响应的原因。
Differing from the traditional theories of stock market cycle, we used the Fourier spectrum analysis method to forecast the cycle.
不同于传统股市周期理论，本文使用傅里叶谱分析技术来模拟预报股市周期。
The structure of collagen was identified with Fourier Spectrum, and the aminophenol of collagen was assayed with high performance liquid chromatography.
并利用傅立叶变换红外光谱对胶原结构进行鉴定，同时采用高效液相色谱对所提胶原蛋白进行氨基酸组成分析。
Based on the lateral Moire fringe of the gratings, the change of Moire fringe was researched by using Fourier spectrum while the frequency of a grating was changed.
用傅里叶频谱分析方法研究了横向莫尔条纹中一个光栅倍频时莫尔条纹的变化。
The transformation features and Fourier spectrum of odd-periodic perfect almost binary sequence pair are studied. Some combined admissibility conditions are also given out.
同时研究了奇周期最佳几乎二进序列偶的变换性质和频谱特性，给出了一些组合允许条件。
In this paper, main problems that face the Fourier spectrum analysis method and parameter model spectrum analysis method are described from the viewpoint of engineering application.
本文从工程应用的角度叙述了以付里叶变换为基础的谱分析方法和参数模型谱分析方法所面临的主要问题。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
Physical meaning: the self-correlation function and the energy spectrum density function compose a Fourier transform pair.
物理含义：能量信号的自相关函数与能量谱密度函数构成傅立叶变换对。
A lot of grating messages including its profile can be derived from diffraction spectrum of grating according to Fourier optical theory.
根据傅立叶光学理论从光栅的衍射频谱中可以反推光栅本身的多种信息，包括其形貌特征。
The mechanism of de-inking of photocopy waste paper with solvent treatment was investigated by Fourier transforming infrared spectrum (FT-IR), image-scanning and microscope analysis.
采用傅立叶变换红外光谱、图像扫描和显微分析等手段，研究了静电复印废纸溶剂法脱墨的机理。
Used Fourier transforming the nuclear logs, its vertical resolution can be achieved from analyzing the changes of amplitude spectrum slope.
对核测井曲线进行付氏变换，其纵向分辨率可以从分析振幅谱斜率变化中获得。
Using Fourier series, the frequency spectrum analysis was analyzed, and spectrum data of harmony wave less than 19 were calculated.
利用傅里叶级数对其进行了频谱分析，计算了次数小于19次的各次谐波电流均方根值的频谱数据。
This algorithm has utilized the signal to carry on the signal characteristic that Fourier includes in the density of the power spectrum after Fourier transform.
算法利用了信号进行傅里叶变换后功率谱密度中所包含的信号特征在基带完成，并用软件实现。
Basic theory of spectrum analysis and Fast Fourier Transform (FFT) algorithm are briefly introduced.
简介了频谱分析的基础理论和快速傅利叶变换(FFT)算法。
Application DFT Discrete Fourier Transform, right through MATLAB continuous signal spectrum analysis, in order to meet the theoretical analysis and practical needs.
应用离散傅里叶变换dft，通过MATLAB实现对连续信号频谱分析，以满足理论分析和工程实际的需要。
The standard method for spectrum analysis in digital signal processing is the discrete Fourier transform(DFT), typically implemented using a fast Fourier transform(FFT) algorithm.
数字信号处理中标准的频谱分析方法是离散傅立叶变换（DFT），典型的实现方法是快速傅立叶变换（FFT）。
The Fourier transform power spectrum of input object can be obtained when the input image is placed at the front or back of the hololens.
将输入图像置于这种全息透镜的前面或后面，均能得到物体的傅里叶变换功率谱。
Most magnetotelluric data processing methods make the Fourier transform of a segment record to get a power spectrum then to solve for tensor impedance element.
大地电磁资料处理方法大多数都是对一段记录做傅氏变换，构成功率谱后再求张量阻抗元素。
Using statistics method, Fourier transform infrared (FTIR) spectroscopy was applied to the study of the spectrum of the powder of cancerous tissues and normal tissues near the cancer of the lung.
使用统计的方法，应用傅里叶变换红外光谱法对肺癌及癌旁正常组织粉末样品的红外光谱进行了统计分析。
OBJECTIVE: To differentiate Chinese traditional medicine semen euryales with Fourier transformation infrared spectrum.
目的：用傅立叶变换红外光谱法对传统中药芡实进行鉴别。
This method can be used to measure similar objects with the regular Fourier transform spectrum (FTS).
该方法可用于能够产生规则傅里叶变换频谱的所有被测物体的几何量。
The structure of objective product was confirmed by characterization with Fourier transform infrared spectrum (FTIR), nuclear magnetic resonance (1H NMR) and mass spectrometer (MS).
并通过傅里叶变换红外光谱（FTIR）、核磁共振谱图（1HNMR）以及质谱（MS）对产物进行了表征，确定了目标产物的结构。
Discrete fast Fourier transform (FFT) has been widely applied to signal spectral analysis and can figure out the entire bandwidth spectrum of a signal.
离散快速傅里叶变换算法在频谱分析中得到了广泛的应用，这种算法得到的计算结果是在整个频段上的频谱信息。
The surface compositions of the pretreated PVDF membrane were determined by Fourier transform adsorption spectrum (FTIR) and X-ray photoelectron spectroscopy (XPS).
采用傅立叶红外光谱（FTIR）和X光电子能谱（XPS）对预处理前后PVDF中空纤维膜表面化学结构进行分析。
Fast Fourier Transform (FFT) is inevitable to cause the spectrum leakage and fence effect because of truncation and discreteness in signal collection.
采用快速傅立叶变换(FFT)进行电力系统谐波分析时，需要对采样信号截断并离散化，从而导致频谱泄漏和栅栏效应。
Design the signal pre-treatment model and make use of such methods as Fourier transfer and wavelet analysis, etc to perform filtering treatment for spectrum signals.
设计信号预处理模块，采用傅里叶变换、小波分析等方法，对光谱信号进行滤波处理。
Fourier Transform Infrared (FTIR) spectrum is an effective method for investigating substance molecular structure swiftly while keeping the specimens intact.
傅立叶变换红外光谱是快速无创分析物质分子结构的有效手段。
We also use short time Fourier transforms to analyze the spectrum of the scattered wave during the propagation process, and obtain some useful results.
并用短时傅立叶变换分析了声波传播过程中晶粒散射波的频谱特性。获得了一些有用结果。
The Fourier amplitude spectrum used in a seismological model can be expressed as a product of source spectrum, propagation path factor and site effect in frequency domain.
在频域内，场地的地震动傅立叶幅值谱，可以表示为震源谱、传播路径影响因子和场地效应的乘积。
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