A method for determining the velocity of seismic wave in two-dimensional medium is presented.
本文针对二维层状介质提出了一种识别地震波速度的新方法。
For a two-dimensional infinite medium containing an elliptical inclusion of different material, elastic stress distribution formulas are derived.
本文推导了二维无限介质内嵌异性介质椭圆的弹性应力场分布。
The permeability identification problem for two-dimensional porous medium was studied by both the direct and the optimization method in this paper.
综合利用直接方法和优化方法研究二维多孔介质渗透率反演问题。
A line drawing is an important medium that human exchanges information of three-dimensional scenes with computer.
立体线框图是人与计算机交换三维景物信息的一种重要媒介。
Printing method for two-dimensional code symbol, printer, drive and memory medium.
二维码符号的打印方法，打印机，驱动器及存储介质。
Computer calculations have been made on the dimensional solution to the anisotropic diffusion convection equation for solar cosmic rays propagating in an uniform and unbounded interplanetary medium.
应用电子计算机计算了太阳宇宙线在均匀并无限的行星际介质中传播的各向异性扩散对流方程的量纲分析解。
The discrete ordinate approximation method of three dimensional radiative transfer equation in absorbing scattering medium is expounded.
阐述了含吸收散射性介质三维空腔内辐射传递方程的离散坐标解法。
Using the theory of wave propagation, one-dimensional wave equation and inverse problem of damaged medium was established and analyzed.
利用波传播理论，建立损伤介质的一维波动方程及反问题分析理论。
The profile of a two-dimensional axisymmetric inhomogeneous medium is reconstructed by using the distorted Born iterative method and multi-grid technique.
将多重网格技术与变形玻恩迭代法相结合，对轴对称二维非均匀介质分布进行了反演。
A rapid and accurate model used to study microscopic imaging through turbid medium is presented which combines traditional Monte Carlo with two dimensional point spread function (PSF).
将二维点扩散函数(PSF)和蒙特卡罗方法相结合，引入了一种研究混浊介质显微成像的快速仿真模型。
According to the complex geological phenomena in rock and soil medium and the features of strata, a three dimensional strata model is established.
根据岩土介质中复杂的地质现象及其地层的层状展铺特性，建立了三维地层模型。
According to porous medium theory, non regional heat balance method is adopted, heat transfer one dimensional mathematical model in CDQ chamber is established.
根据多孔介质理论，采用非局域热平衡方法，建立了干熄炉内传热的一维数学模型。
Using finite difference method, we carry out the numerical calculation of the electric field induced by a low frequency magnetic field in a two dimensional stratified biological medium.
采用有限差分法对低频磁场在二维分层生物媒质中诱发的电场进行了数值计算。
Taking one-dimensional fluid saturated viscoelastic porous medium as example, the influence of viscous coefficient on the dynamic responses has been investigated.
最后以一维黏弹性流体饱和孔隙介质为例，分析了黏性系数对动力响应的影响。
A simulation experiment using the fracturing of two-dimensional brittle glass plates is designed to study the propagation process of fracture in a brittle medium.
设计了一个二维脆性玻璃板的破裂模拟实验，以研究脆性介质的破裂传播过程。
Interval velocity as well as shape and depth of a curved interface in layered medium can be inversely derived lay using re - fraction waves to achieve tomography of two dimensional interval velocity.
对于层状介质，用折射波可反演出层速度、曲界面的形状和深度，实现二维层速度成像。
Methods: The fetal faces of 1028 pregnant women in medium and late pregnancies were imaged by three-dimensional ultrasound and compared with after feticide or birth.
方法应用三维超声对1028例中、晚孕妇的胎儿面部结构行三维超声成像，并与引产后对照。
Based on non-contact three-dimensional measuring principle of computer vision and light refraction principle, a new theoretical method of visual measurement in multi-medium was proposed.
基于计算机视觉的无接触三维测量原理和光的折射定律，提出一种多介质下空间目标视觉测量方法。
Methods The fetal faces of 2457 pregnant women in medium and late pregnancies were imaged using two-dimensional ultrasound.
方法应用二维超声对2 45 7例中、晚期孕妇的胎儿行颜面部检查。
Diffractive properties of two dimensional relief gratings made with electromagnetic anisotropic medium are theoretically analysed by using rigorous modal theory, and the degradation is discussed.
利用严格模式理论对二维电磁各向异性浮雕型介质光栅的衍射特性进行了理论分析，并对其退化情形进行讨论。
This paper presents the numerical simulation analysis of a two-dimensional nonlinear mathematical model for heat and moisture transfer in the saturated porous medium under a canal.
本文提出了系数效应滞后的计算方法，数值模拟了饱水渠道冻结时水热迁移的二维非线性模型。
The discontinuous finite element method and time shift and superposition method are used to calculate the transmittance and reflectance in one-dimensional scattering slab medium.
采用间断有限元方法对环形激波在圆柱形激波管内绕射、反射和聚焦流场进行了数值模拟。
BACKGROUND: Two-dimensional data colourings are an effective medium by which to represent three-dimensional data in two dimensions.
背景：二维数据着色是一个有效的媒介，通过它在二维中表征三维数据。
BACKGROUND: Two-dimensional data colourings are an effective medium by which to represent three-dimensional data in two dimensions.
背景：二维数据着色是一个有效的媒介，通过它在二维中表征三维数据。
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