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射线理论的英文

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"射线理论"怎么读用"射线理论"造句

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  • ray theory

例句与用法

  • Asymptotic ray theory
    渐近射线理论
  • Two ways of analyzing optical waveguide that are wave theory and optical ray theory are formulated
    本文介绍了分析光波导的两种方法:波动理论和射线理论
  • The refractive index of one kind of micro - structured fiber were studied by optical ray theory , the distribution of refractive index is gived
    应用射线理论对一种微结构光纤包层的折射率进行了计算,给出了折射率分布的精确解。
  • First , the formula for average intensity of ocean reverberation is deduced on the basis of ray theon " for monostatic case , then it is proved by computer simulation and experiment data
    本文首先从分层介质的射线理论出发导出倾斜海底收发合置浅海近程海洋混响平均强度的近似表达式,并对其进行数值分析与实验验证。
  • Besides that ray theory is helpful to calculate three - dimensional sound field , and the inversion of sound field could be finished quickly enough to realize the detection of ocean environment in wide area
    特别是射线理论对解三维声场尤为方便,它将有望实现三维声场的快速计算和声场的反演,达到海详环境的监测目的。
  • Advanced mathematical technologies , especially the newly developed wavelet transform and the frame theory , provide a solid foundation for such an effort . the ray - theory based beam - summation method , such as the complex source - generated beam and the gaussian beam methods , and the local phase - space domain ( beamlet domain ) wave field extrapolation methods employing windowed fourier transform ( wft ) or wavelet transform are proposed consequently
    基于射线理论的高频渐近射束(复射束、高斯射束)叠加方法,以窗口富里叶变换( wft )以及小波变换为基础的局部相位-空间域(小波束域)波场外推方法等相继产生。
  • Subsequently , the waves induced forces and their driven effects on currents are studied in detail . in the discussion of the effects of currents on waves , according to the wave radiation theory and the law of wave action conservation , the equivalence of none vorticity condition of the vector of wave number in constant wave field and fermat theory is testified . the dynamic and kinematics effects of background currents on waves are introduced concisely
    在流对浪的作用讨论中,依据波动的射线理论和由变分原理导出的波作用量守恒定律,阐明了稳定波场波数矢量的无旋条件与费马原理的等价性,扼要讨论了背景流场影响海浪的运动学效应和动力学效应,首次指出水位(包括天文潮位与风暴潮位)变化对海浪成长与消衰的影响,为流浪潮联合数值模式的发展提供必要的理论依据。
  • At the same time , as more and more radio sources have been set up , electromagnetic pollution in urban area becomes more serious , which is harmful to people ' s healthy and communication system so it is necessary to simulate the electromagnetic propagation in urban area by computer being an approximate hf method in evaluating em scattering , the complex ray method ( crm ) is valuable in actual applications , mainly benefited from its simple physical model , convenient mathematical formulation and computational efficiency , especially with the scenes of scattering from complex objects based on the condition mentioned above , a hybrid ray model of the urban area electromagnetic wave propagation prediction was established with the foundation of ray tracing theory and complex ray theory
    复射线技术作为一种求解波场问题的高频近似方法,由于其具有物理模型简单、数学处理方便、计算效率高等优点,在复杂的目标散射特性分析等应用领域中有着重要的应用价值。基于以上的情况,本文在射线追踪理论和复射线理论的基础上,为城区环境建立了混合射线预测模型。本文采用椭圆模型对已有的射线追踪方法进行加速,并将复射线理论应用到城区环境电波传播预测中,提出新的预测方法混合射线方法。
  • Due to nonlinear bottom boundary condition , the generation of internal tides over finite topography can only be deal with by using of ray - tracing method beforetime . the transforms introduced in this dissertation make it possible use eigenvalue method to investigate the generation of internal tides over finite topographies
    由于非线性边界条件的使用,前人处理有限地形上内潮的产生问题只能求助于射线理论,本文提出的坐标变换将若干海底地形变换成平底,从而使得利用特征值方法研究这些地形上的内潮生成问题成为可能。
  • The dissertation gives a comment on the field of energy - transmitting fibers for mid - infrared laser , an introduction to the mechanism of infrared - transmitting fibers in view of radiations and waveguides , and a theoretical analyze of the layer - selecting method for the fibers with multi - layer dielectric films . in view of the properties of sic in the region of mid - infrared , the author has done many works about the energy - transmitting fibers with sic , and summarized as follows : first , it is found that sic is a very good material for the fabrication of power - transmitting fibers for mid - infrared laser , especially for co2 laser that works at 10 . 6um wavelength , and sic / sio2 hollow fibers has not been studied in the world for the first time to our knowledge . second , it is pointed out , for the first time to our knowledge , that the hollow fibers with a structure like si / sic / sio2 or ge / sic / sio2 have very good properties for the mid - infrared laser power transmitting , especially for co2 laser
    本论文评述了关于中红外传能光纤的国内外进展,从光射线理论和波导理论出发介绍了红外传能光纤的传输机理,从薄膜光学出发分析了多层介质膜传能光纤的膜层选择机理等基础理论,针对碳化硅( sic )在中红外区的特点,在导师侯蓝田教授领导的科研组已有成果的基础上进行了以下几个方面的研究:发现了sic是制备红外传能光纤的良好的红外材料, sic sio _ 2空芯传能光纤在国际上还没有人进行研究:提出了具有si sic sio _ 2和ge sic sio _ 2膜结构的空芯传能光纤,据我们所知,这种光纤目前在国内外还没有人进行研究,并对其传输性能进行了可行性分析。
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