差分法

The piecewise linear current density recursive convolution in finite-difference time-domain method is used to study the characteristics of one-dimensional unmagnetized plasma photonic crystals with a defect layer.

采用时域有限差分法中的分段线性电流密度卷积算法，研究具有单一缺陷层的一维非磁化等离子体光子晶体的缺陷模特性。

A finite-difference time-domain algorithm is applied to study the one-dimensional unmagnetized plasma photonic crystals with time-varying, collision, warm, isotropic plasma.

采用时域有限差分法给出了电磁波通过时变的、各向同性的、热的、碰撞的等离子体构成的一维非磁化等离子体光子晶体的FDTD算法公式。

The effect on periodic band gap of unmagnetized plasma is analyzed by its periodic structures and parameters of plasma.The electromagnetic propagation process of a Gaussian pulse through an unmagnetized plasma photonic crystal is investigated.

用时域有限差分法（Finite-Different Time-Domain，FDTD）中的电流密度卷积（Current Density Convolution，JEC）算法讨论了一维非磁化等离子体光子晶体的禁带周期特性，分析了非磁化等离子光子晶体的周期结构和等离子体参量对其禁带周期的影响。

This paper presents a numerical model for solving problems of water and contaminant transportion and transformation in variably saturated porous media.

本文采用有限差分法离散水流方程和污染物浓度方程。

The numerical calculation and analysis of stress fields in the course of loading for coal or rock were simulated by means of fast lagrangian analysis of continua software.

连续介质快速拉格朗日差分法(fastlagrangiananalysisofcontinua，简写FLAC)是近年来逐步成熟完善起来的一种新型数值分析方法。

A novel moving object detection based on adaptive background subtraction and symmetrical differencing is presented in this paper.

本文提出了一种基于背景相减法和对称差分法来进行运动目标检测的方法。

At the same time, according to the related theories, theoretical relation of soil water profile was established under the condition of ponded infiltration and limited soil redistribution, the results were verified with measured data and proved to be reasonable.

此外，研究表明，导热率与土壤含水率、土壤水吸力、含盐浓度之间均存在良好的幂函数关系；在取得一定温控条件下的土壤水分与温度分布实测资料的基础上，根据Philip经验方程，通过差分法计算得出温差作用下的水分扩散率，该参数可表示为温度的幂函数形式。

In this paper, the application of finite-difference time-domain method modeling to analyze some propagating properties of optical fiber is studied.

本文主要研究用时域有限差分法模拟分析光纤传输中的一些性质。

By using two-dimensional finite difference of time domain, the coupling between two subwavelengh slits is investigated.

利用二维时域有限差分法，研究了光波在金属层中亚波长两狭缝之间的耦合过程。

Mathematical model of nonlinear vortex-induced vibration was presented for predicting the nonlinear dynamic responses of submerged floating tunnel tethers which were subjected to wave, current and oscillatory displacements at their upper end in horizontal and vertical directions.

建立了水中悬浮隧道锚索在波流场中涡激振动的非线性数学模型，考虑了锚索的几何非线性对其涡激振动的影响，并应用有限差分法求解了锚索的运动控制方程。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。