研究了将功能梯度材料中应力波传播的计算模型应用到土介质中，提出了梯度土介质的概念。
The model of wave propagation in functionally graded material (FGM) is introduced to soil medium, and the concept of functionally graded soil medium is brought forward.
本文研究一类抛物型发散梯度折射率棒透镜中高斯光束的传播。
Gaussian beam propagation through a kind of parabolic divergent GRIN rod lenses is studied.
导出了克尔非线性梯度折射率光纤轴对称模传播常数的解析公式。
The analytic formulas of propagation constants of axisymmetric modes in a Kerr law nonlinear graded index optical fiber are derived.
启动压力梯度使压力波传播范围变小，井底污染会造成一个附加压力降。
The spread range gets smaller because of threshold pressure gradient, and there will be a additional pressure drop in the bottom of the well because of the skin damage.
本文采用矩阵光学的方法，分析了高斯光束经球端面抛物型梯度折射率棒透镜的传播与变换特性。
Based on the matrix optics, the propagation and transformation characteristics of Gaussian beam through a parabolic gradient-index rod with the spherical end surfaces are analyzed.
本文利用斯涅耳定理，采用计算机模拟的方式给出光在折射率呈层状梯度分布的介质中的传播路径。
This paper uses Senell sLaw and applys the way of Computer Modeling to draw the light track in the media which have layer gradients of the index of refraction.
在常规算法的基础上，提出了一种基于变斜率算法与共轭梯度算法的接力逆向传播算法。
An artificial neural network algorithm, based on variable slope BP algorithm and conjugate gradient algorithm, is presented in this paper.
本文研究一种等折射率面为旋转抛物面的梯度折射率纤维的光线传播和近轴成像特性。
The ray propagating and paraxial imaging characteristics of a GRIN fiber lens with constant refractive-index surfaces of revolution paraboloids are studied.
地幔底层是地核热能向地幔传播的必经之路，也是地幔中温度和温度梯度最高的地区。
The CMB is not only the medium transferring thermal energy from core to mantle, but also the region in which the temperature and temperature gradient is the highest in the whole mantle.
研究两正交偏振高斯光束经克尔非线性自聚焦和发散锥型梯度折射率棒的传播特性。
Propagation properties of two orthogonally polarized Gaussian optical beams through Kerr law nonlinear self focusing and DE focusing conical graded index rods are investigated.
本文研究了一种类锥形梯度折射率纤维的光线传播特性和近轴成象规律。
The ray propagation and paraxial image characteristics of a taper-like GRIN fiber is studied in this paper.
目前BP网络采用误差逆传播算法学习训练神经网络，该算法是基于网络误差函数梯度下降的。
BP network adopt error against propagate algorithm to leam and train the neural network at present, this algorithm is on the basis of the error function gradient of the network.
声波的传播技术在众多领域有着广泛的应用，其中利用温度梯度分布实现声波传播控制的技术近年来引起人们的关注。
Acoustic wave propagation technology has a very wide application. The technology of temperature gradient acoustic wave controlling is used to achieve more and more cause for concern.
本文研究高斯光束经抛物形梯度折射率纤维透镜的传播。
Gaussian beam propagation through a parabolic GRIN lens is studied.
本文研究高斯光束经抛物形梯度折射率纤维透镜的传播。
Gaussian beam propagation through a parabolic GRIN lens is studied.
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