英语释义

1. any of various functions (such as F(u)) that under suitable conditions can be obtained from given functions (such as f(x)) by multiplying by eiux and integrating over all values of x and that in scientific instrumentation describe the dependence of the average of a series of measurements (as of a spectrum) on a quantity of interest (such as brightness) especially of a very small magnitude — called also Fourier transformation

片语

fourier r transformation傅里叶变换

fourier counter transformation傅里叶反变换

fourier bessel transformation汉克尔变换

fourier-transformation infraredfourier变换红外

Fourier series transformation付里叶级数的转换

Fourier sine transformationFourier正弦变换

fourier finite transformation傅里叶有限级数展开式

Schnelle Fourier-Transformation快速傅里叶变换

Diskrete Fourier-Transformation离散傅里叶变换

英汉例句

• a leakage point positioning systerm is developed, which is based on correlation analysis of fast fourier transformation for locationing the leakage in the pipe.

  针对管道漏点定位问题，研制出了一套基于快速傅立叶变换的相关分析法管道泄漏点定位系统。

• in this paper we present a new technique for accomplishing the fourier transformation of interferograms via total optical means.

  本文提出了用光学处理器完成干涉图的傅里叶变换，从而实现全光学的傅里叶分光光度计的新技术。

• unsatisfied results are often achieved when using the algorithm based on fourier transformation in radar channel equalization experiment.

  在对雷达通道均衡的实验研究中发现，常用的基于傅里叶变换的算法往往效果不佳。

• afterward, we chiefly introduce monte carlo method and fast fourier transformation and micromagnetism (fftm).

  然后重点介绍了蒙特卡罗方法和快速傅立叶变换微磁学方法。

• a series of primary pictures are made by optical fourier transformation and convolution operation.

  这种方法是通过对光学傅氏变换所获得的一系列初始图像进行卷积。

• ibd algorithm is analyzed, and the space ibd method combined with the ibd method based on fourier transformation is realized.

  分析了ibd算法，并实现了空域ibd和利用傅立叶变换的ibd相结合的算法。

• according to the line theory, fourier transformation of strength distribution function for annular grating image has been obtained.

  根据线性系统理论得到环形光栅像强度分布函数的付里叶变换。

• a new algorithm is proposed, through fourier transformation projection theory using frequency-domain analysis, to detect local linear cracks on the freeway surface.

  利用频域中傅里叶变换投影定理，提出一种新的离散脊波实现算法，应用于高速公路局部线性裂纹的检测取得较好效果。

• meanwhile, using the fourier transformation comparisons were made between the curves of the velocity of the integrated anchor system and defective one in frequency-domain.

  同时利用傅氏变换分析了其频域特性，对各种情况下完整锚桿和缺陷锚桿的速度曲线作了对比。

• the sample is evaluated by fourier transformation infrared absorption spectroscopy(ftir), x-ray photoelectron spectroscopy(xps), x-ray diffraction analysis(xrd) and vickers microhardness measurement.

  对这种新材料进行了傅里叶变换红外吸收光谱、x射线光电子能谱、x射线衍射和薄膜的维氏显微硬度等测量。

• aimed at measuring the bullet mark on the helmet, the fringe projection fourier transformation profilometry(ftp) based on double reference surfaces is proposed.

  针对头盔上弹痕的三维轮廓测量，提出了采用基于双参考面的条纹投影傅里叶变换法。

• fourier transformation in time domain and frequency domain is one of the main methods for modern railway signal detection.

  时域分析和傅氏变换的频域分析方法是现代铁路信号检测的主要方法之一。

• a fast fourier transformation based second order reliability method (fft sorm) is proposed.

  建立了一种基于快速傅立叶变换的二阶可靠度分析方法。

• fourier transformation is used to analyze the spatial frequency spectrum and intensity distribution of the diffraction beams.

  介绍了设计原理方法，采用傅里叶变换分析了衍射光束的空间频谱及光强分布。

• a method of feature extraction of incoherent average, multiresolution decomposition, fourier transformation is proposed.

  该文首先提出了非相干平均、多分辨率分解、富氏变换的特征提取方法；

• three types of data processing are performed using fourier transformation and correlation technique.

  本文应用富立叶变换与相关技术原理对数据进行了三种方式的处理。

• but in essence, the short-time fourier transformation is a method of ingle resolution because it uses an unchanged short-time widow function.

  但从本质上讲，短时傅里叶变换是一种单一分辨率的信号分析方法，因为它使用一个固定的短时窗函数。

• fast fourier transformation is an effective, practical dft algorithm.

  快速傅立叶变换是一种有效、实用的信号dft算法。

• in order to increase computation speed and accuracy of transient response, the algorithms based on fast fourier transformation were constructed, and the essence of the algorithms were also explored.

  为了提高瞬态响应的计算速度和精度，构造了基于快速傅立叶变换的响应计算格式，并研究了这种格式的本质。

• a method of using fast fourier transformation (fft) to calculate the frequency characteristics of discrete mathematical model is introduced.

  介绍了利用快速富里叶变换（fft）计算离散数学模型频率特性的方法。

• 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鑒别。