利用晶体光学基本方程推导出菲涅耳波射线方程，通过波射线方程并结合麦克斯韦方程组求解晶体光学问题。
The Fresnel wave ray equation is deduced by use of the fundamental equations of crystal optics. The crystal optics question is solved by Fresnel wave ray equation cooperating with Maxwell equation.
高斯束是波动方程在特定射线附近的高频渐近解。
Gaussian beam is the asymptotic solution of wave equation concentred at the central ray.
当前实用性较强的射线追踪方法，包括波前法，最短路径法，走时插值法，程函方程有限差分法等。
More practical ray tracing methods currently include the wavefront method, the shortest path method, the travel time epenthesis method, the eikonal equation finite difference method, etc.
波动方程正演模拟法相对于射线法具有精度高、效率低的特点。
The forward modelling method of wave equation is of a high precision and a lower computing efficiency compared with the ray theory based method.
本文给出了采用IGRF模型的哨声模波三维射线跟踪方程，并概述了射线跟踪模型及数值计算程序。
In this paper we have developed a program for three dimensional ray tracing of whistler-mode waves in which the IGRF model was adopted.
目前通常采用的抛物型方程，也是在射线理论的假设条件推导的。所以，其波动性质也是不完全的。
Also parabolic type equation commonly used now is derived from the hypothetic conditions of ray theory, so it does not include the wave natures completely.
该算法使用射线追踪计算传播时间，应用波场界面方程计算反射振幅。
This algorithm USES ray tracing to calculate traveltime, and DE - rives reflection amplitude from wave field interface equation.
根据分析提出了新的方案，新方案中跳过了射线的计算，直接通过线性方程组得到定位点。
Based on the upper discussions, a new solution is presented which skipped the calculation of the ray and acquired the locating point by a linear equation group.
高斯射线束方法是将波动方程和射线理论相结合的一种地震正演模型方法。
Gaussian beam method is essentially a seismic forward modeling method that combines wave equation and ray theory.
本文介绍一种用于X射线荧光波谱分析的无标样方法，推导了计算元素含量的迭代方程序。
This paper expounds a methods for X-Ray fluorescence spectrometry without standards, and derived a iteration equation for calculation of concentrations of the elements.
提出了一种基于牛顿迭代法解方程组的射线和NURBS曲面求交算法。
A fast intersection algorithm for ray and NURBS surface is presented. The algorithm bases on the Newton iteration solution for equation set.
从等离子体的流体动力学方程出发，导出了描述激光辐照平板靶条件下产生x射线激光物理过程的自相似方程。
A similarity model describing the physics of slab target X ray lasers is constituted from the ideal hydrodynamic equations.
采用弯曲射线追踪算法计算走时，分别用最小二乘QR分解算法与代数重建技术就恰定方程组、超定方程组与欠定方程组进行了成像计算。
LSQR and ART algorithms are applied separately to calculate tomography for the determined system of equation, overdetermined system of equation and underdetermined system of equation.
对计算X射线发射中需要求解的束缚电子占据概率方程组，讨论了采用显式求解的可能性。
We discuss the evident algorithm's feasibility of the rate equations of electron's occupation probabilities needed in getting the X-ray's eradiation.
求解寻迹方程，便得到曲面绕射线的轨迹和边缘绕射点的位置，从而可以计算它的绕射场。
By solving these equations, the diffraction trace of a curved surface and the position of the edge's diffraction point are determined so that the diffraction field can be obtained.
求解寻迹方程，便得到曲面绕射线的轨迹和边缘绕射点的位置，从而可以计算它的绕射场。
By solving these equations, the diffraction trace of a curved surface and the position of the edge's diffraction point are determined so that the diffraction field can be obtained.
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