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In this paper,a new Fourier analysis technique called the arithmetic Fourier transform is used to compute DCT.

本文通过一种新的傅立叶分析技术——算术傅立叶变换来计算DCT。

Several on the use of Fourier transform for harmonic analysis of the code.

详细说明：几个关于利用傅里叶变换进行谐波分析的代码。

The method of impact excitation testing with Fast Fourier Transform based on spectrum analyzer to determine the dynamic characteristics of a heald frame is introduced.

介绍了通过基于快速傅立叶变换的谱分析确定综框的动态特性。

The pyrolysis characteristics of typical agricultural biomass were investigated using a tubular reactor coupled with a Fourier transform infrared analyzer.

采用管式反应器与傅里叶变换红外分析联用技术进行了生物质热解特性及主要气体产物释放规律的研究。

Inert solvent was selected to extract corresponding extractives from different kinds of biomass. Pyrolysis of the extractives was studied on thermogravimetric analyzer coupled with Fourier Transform Infrared spectroscopy.

利用惰性溶剂从生物质中提取得到相应抽提物，在热重红外联用仪上研究了抽提物的热裂解行为，并探讨了其对生物质热裂解的影响。

The surface of clay was modified by using octadecyl ammonium and the structure of clay after modification was characterized by using X-ray diffractometer , thermogravimetric analyzer and Fourier transform infrared .

为了使得硅酸盐片层同所有高聚物基体之间有相容性，通常需要将亲水性的硅酸盐表面转化成具有亲有机物质的性质，让许多工程高聚物能够插入。因此，用十八烷基胺改性粘土表面，改性后的粘土结构通过XRD、TG、FTIR表征。

The chemical and structural propert ies of the humic acids before and after fractionation were characterized by elem ental analyzer, Fourier transform infrared spectrometry, solid state 1 3C-nuclear magnetic resonance spectrometry (13C-NMR) and pyrolysis-gas chr omatography-mass spectrometry.

利用切面流超滤技术将Pahokee泥炭腐殖酸分为相对分子质量不同的8个级分，并综合应用元素分析和傅立叶变换红外光谱、固体13C核磁共振(13C NMR)和裂解-气相色谱-质谱技术详细研究了分级前后腐殖酸分子的结构组成特征。

in order to simplify a process of getting parameters of daubechies biorthonormal wavelet, according to the fourier cosine transform of scale equation of daubechies biorthonormal wavelet, an algorithm is proposed when the daubechies biorthonormal wavelet has even symmetry double scale parameters.

摘 要：为简化daubechies双正交小波因数的求解，以紧支集daubechies正交小波中尺度关系的fourier变换余弦形式为基础，提出1种当双尺度因数为偶对称时，推导daubechies双正交小波对偶尺度方程因数的方法，并给出构造数值实例。

Since this method,which is only the expansion of the Fourier transform,can be easily realized,it can achieve the realprocess effect in the vehiclecarried system.The simulation experiments show the validity of the proposed method.

由于该方法实现简单，仅为现有傅里叶变换的扩展，在车载系统中将会获得实时处理的效果，文末的仿真实验验证了该方法的有效性和实用性。

Using Fourier series expansion and Laplace transform,a global dynamic equilibrium equation in the spatial state-space form is obtained.

文中利用Fourier级数展开，Laplace变换，推导了变厚度圆锥壳状态空间形式的运动微分方程。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。