Diffraction on edge of semiinfinite screen of eletromagnetic wave 电磁波在半无限屏缘的衍射
The crisp white edge of a curling wave; curling smoke from the chimney. The breakers came tumbling onto the shore. 翻滚的海浪易碎的白色浪尖;烟囱中翻滚的烟尘。浪涛滚滚而来拍打着岸边。
Stand at the edge of the bluff she can see the wave crashing below 她站在悬崖之边,可以看见底下的波浪在猛烈撞击
Ian Taylor, head of Vitol, the energy trader, says he believes the industry stands at the edge of a wave of consolidation. 能源交易商vitol负责人伊恩泰勒(iantaylor)表示,他认为能源业即将掀起整合浪潮。
Both sine wave and steep pulse edge are special cases of complex frequency wave. 正弦振荡和脉冲边沿都是自激复频率波的特定情形。
Result Through the method, the unobvious dicrotism, trail wave and the anomalistic wave appearing at the ascending and descending edge of the main wave, and multi-scale characters and all kinds of characters in time domain of pulse signal were further acquired more accurately. 结果确定了不明显的重搏前波、重搏波,以及在主波上升沿和下降沿上出现的不规则脉波,并进一步准确提取了脉象信号的多尺度特征和各种时域特征。
A new method is presented to enhance the image edge using photorefractive two wave coupling. 提出一种利用光折变二波耦合放大原理实现图像边缘增强的新方法。
These specific forms are: line bevel edge, basic wave edge, wave edge in a line, wave edge in double line, leaf wave edge, and leaf wave edge in a line. 其磨削花型分别是:磨直线斜边、磨靠边基本波浪边、磨直线波浪边、磨双直线波浪边、磨树叶型波浪边、磨直线树叶波浪边。
Application of Gabor Transform for Detecting Crack Edge Reproduced Wave from Reactor Pressure Vessel Gabor变换用于核压力容器裂纹楞边超声检测
This paper proposes an edge detection scheme for millimeter wave images, which has low resolution and large noise. 针对毫米波图像噪声强、分辨率低的特点,提出了一种新的边缘检测方法。
Analysis and control on side camber and single edge wave of hot rolled strip 热轧带钢侧弯及单边浪板形的分析与控制
With the method, the lateral displacements of metal of cold aluminium strip rolling are studied in different width to thickness ratios and different flatnesses of edge wave and central wave after rolling. 用该方法对冷轧铝带不同宽厚比、轧后边浪和中浪的情况进行了研究。
This paper proposes a fixed threshold edge detection scheme for millimeter wave image. 文章提出了一种固定阈值的毫米波图像边缘检测方法。
The method avoids the common problem of edge dithering of rectangular wave, eliminates disturbance input easily, and resolves the problem of edge shift of rectangular wave which results from the DC offset in measured signal or the zero-drift of amplifier. 该方法有效地避免了矩形波边沿抖动问题,能够比较容易地排除干扰信号,并能够对因被测信号中含有直流分量或运算放大器零点漂移等原因引起的矩形波边沿位置偏移问题进行修正。
In ultrasonic testing on under built up welding clad cracks in stainless steel, the model of ultrasonic signal is presented by analyzing Lipschitz for material noise, crack wave and edge reproduced wave in C α space. 在不锈钢堆焊层层下裂纹的超声检测中,根据噪声、材料杂波、裂纹回波和楞边回波等在Cα空间中奇异度大小(Lipschitz常数α)的不同,提出了相应的超声信号模型。
This method may be used to calculate the arbitrary airfoils with sharp leading edge provided that the shock wave is attached. 在激波附体的条件下,本文的方法可用于计算大迎角尖前缘任意翼型的超音速和高超音速俯仰安定性导数。
The transverse distributions of above mentioned force parameters are obtained in3 cases of edge wave, center wave and good flatness of rolled strip. 获得了轧后边浪、中浪和板形良好等三种不同板形条件下这些力参数的横向分布规律。
A mathematical model for level adjustment on the finishing train is set up on the basis of analysis on the side camber and single edge wave of the hot rolled strip. 本文解析了热轧带钢侧弯及单边浪板形,在此基础上建立了精轧机组进行水平控制的数学模型。
A model is developed for the ultrasonic signal testing on under clad crack of stainless steel, by analyzing Lipschitz α of material noise, crack wave and edge reproduced wave in C a space. 根据噪声、材料杂波、裂纹回波、楞边回波等在Cα空间中Lipschitz常数α的差异提出了在不锈钢堆焊层下裂纹的超声检测信号模型。
Statistic Evaluation Methods of Linearity of Triangle Waveform Signal Edge Millimeter Wave Radar for Measurement between Vehicles 三角波信号沿线性度的统计分析评价方法
The gauge control system especial AGC system can deteriorate open loop control of plate shape especially when the mill rigidity is small, making edge wave of rolling plate. 厚度控制系统特别是AGC系统对中厚板板形的开环控制有一定影响,特别是刚度偏小的轧机在轧制宽薄中厚板时容易出现边浪。
The crack edge reproduced wave is detected by using the multiresolution analysis on sampling and modeling ultrasonic signals. 经采样且模型化的信号,通过多分辨分析可实现裂纹楞边回波的检测。
Long st and ing edge wave; 长周期驻立边缘波;
The results show that the changing processes of rising edge and attenuation characteristics of surface wave present the index, and the time surface wave rising undergoes is shorter than that of the attenuation process. 结果表明,表面波波面在上升过程和衰减过程中振幅都呈指数规律变化,且上升过程持续时间比衰减过程持续的时间短,并计算出了衰减系数。
Secondly, we use the scan and label chain code tracking algorithm to extract the edge of the closed areas of echo image, and transform the 2-D edge data into 1-D wave data. 然后采用扫描标号和链码跟踪算法提取图像中的封闭区域的边缘,并将表示边缘的二维数据转换为一维波形数据。
U.K. as the world factory was the richest country which held the global hegemony; while China declined and reduced to an edge country in the wave of globalization. 英国成为世界工厂,是建立世界性霸权的首富国家;而中国却日渐衰落,在全球化的浪潮中,沦落为边缘性的国家。
The experiments of milling insert with five sorts groove is completed when cutting parameters are different. The surface force density functions are set up for smooth front edge and wave edge milling insert. 对五种不同槽型的铣刀片进行了不同切削参数的试验,建立了平前刀面铣刀片和波形刃铣刀片的表面受力密度函数。
With increased amount of doped Ba2+, the absorption wavelength edge shifts to long wave direction, which leads to an increase in optical absorption intensity in the visible-light region. 随着Ba2+掺杂量的增加,催化剂的吸收边缘波长向长波方向发生移动,对可见光吸收能力增强。