查询词典 propagation

The propagation equation of Gaussian pulse is theoretical derived considering second-,third-,fourth-order dispersion.The influence of FOD on propagation properties of femtosecond Gaussion pulse in Single-mode optical fiber is mostly considered.

推导了考虑二、三、四阶色散的高斯脉冲传输方程；利用计算机数值模拟的方法，研究了四阶色散对飞秒高斯脉冲在单模光纤中传输特性的影响。

In order to study the propagation of partially coherent modified Bessel-Gaussian beams passing through a paraxial ABCD optical system with hard-edge aperture,the approximate analytical propagation equation was derived with the hard-edged aperture function expanded into a finite sum of complex Gaussian functions.

为了对部分相干修正贝塞尔－高斯光束通过有硬边光阑近轴4BCD光学系统的传输进行研究，采用将硬边光阑窗口函数展开为有限个复高斯函数之和的方法，得到了近似的解析传输公式。

Using the relations between Hermite and Laguerre-Gaussian modes and expanding the window function of two-dimensional rectangular hard-edged apertures into a finite sum of complex Gaussian functions, the propagation of complex- argument Laguerre-Gaussian beams through a paraxial optical ABCD system with a rectangular hard-edged aperture is studied. An analytical propagation equation is derived and used to study the diffraction at the rectangular hard-edged aperture and the focusing properties of complex-argument LG beams.

利用拉盖尔－高斯模和厄米－高斯模的变换公式，并使用将二维矩孔光阑窗口函数展开为有限个复高斯函数之和的方法，得到了复宗量拉盖尔－高斯光束通过含矩形硬边光阑近轴ABCD光学系统的变换的解析传输公式，并对复宗量LG光束通过矩形硬边光阑的衍射和聚焦特性进行了研究。

Assuming the initial background is an isothermal and hydrostatic equilibrium atmosphere in which the horizontal pressure gradients are balanced by the geostrophic winds, we study the nonlinear propagation characteristics of the gravity waves, analyze the influence of the earth's rotation on the propagation of gravity wave and compare the simulation results with that obtained by the linear gravity theory.

假设初始背景是满足流体静力学平衡和地转平衡的等温大气，我们研究了重力波的传播特性，分析了地球旋转效应对重力波传播的影响，将模拟结果与线性重力波理论给出的结果及实验观测结果进行了比较。

The model of circuit fault propagation based on CA has been applied into grid circuit, in which CA fault model has been studied, and the process of fault propagation has been illustrated according to the evolving rules, the effectiveness of this model has been validated by simulating results as well.

将基于元胞自动机的电路故障传播模型应用到网格电路中，研究该电路故障的元胞自动机模型，及其按照规则演化的故障传播过程，通过仿真，验证了模型的有效性。

Phase and group velocity are the important parameters for researching seismic wave propagation and describing the media property, and they are key contents in theory of elastic wave propagation and play a role in theory and application.

相速度和群速度是研究地震波传播规律和描述介质特性的重要参数，是弹性波传播理论中的核心内容，在理论研究和实际应用中有重要作用。

The influence of indentor radius on the plastic deformation has been discussed and some important results are as follows:(1) The influence of the ratio of ceramic coating thickness to indentor radius on the failure of coating, plastic deformation of substrate and crack propagation are obvious.(2)The propagation of crack in ceramic coating is assumes to be of semi-elliptical shape under normal contact with a rigid sphere.(3)Fatigue life of ceramic coating is mainly decided by substrate and load, the lower substrate elastic moduli and load, the more cycles of fatigue.

分析了压头半径对塑性变形的影响，模拟结果表明；(1)陶瓷涂层厚度和压头半径之比对涂层失效、基体塑性变形及裂纹的形成有显著影响；(2)在刚性球压头静态挤压条件下，陶瓷涂层中的预制裂纹按照椭圆形裂纹规律扩展；(3)陶瓷涂层的疲劳寿命与基体和载荷有很大关系，基体弹性模量越小，疲劳寿命延长。

The propose of the study was to increase the propagation rate of Lagerstroemia indica and establish the its rapid propagation system.

［目的］提高紫薇的繁殖速度，建立紫薇的快速繁殖体系。

This paper emphasis intruduced back-propagation ANN model and its advanced. Based on the flood of Yangtze River at Luoshan and Hankou station, by using a self-adapt back-propagation algorithm, this paper established a BP nerve network model about riverway flood forecasting of Hankou considering the interzone inflow.

本论文着重介绍了BP神经网络模型的方法及其改进方法在河道洪水预报中的应用研究，将自适应BP模型引入，建立了考虑区间入流的河道洪水预报BP神经网络模型。

The paper accords to the northeastern cities specially the Heilongjiang Province major cities wild plants application present situation, and take wild plant Linaria vulgaris L. var. sinensis Bebeaux in Heilongjiang Province as research object, and carries on the contrast experiment through the many kinds of propagation technology method, in order to establish the propagation system, which can provide the theory foundation for it in the botanical garden can fast promote the application.

本文根据东北地区特别是黑龙江省大中城市野生植物的应用现状，以黑龙江省方正县野生柳穿鱼为研究对象，首次对其繁殖技术进行比较全面系统的研究，包括种子繁殖技术、扦插繁殖技术及组织培养繁殖技术，试图建立一套较为优化的的繁殖技术体系，为其进行大规模的产业化生产提供理论基础，在园林绿化中得以快速推广应用。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。