轨道

Specifically, there are three kinds:(1) constant variation method to track two-body problem the root number of variables to establish perturbed equation;(2) coordinate perturbation method in order to track objects in real position and the location of an intermediate orbit perturbation differential equation as a variable to establish;(3) transformation theory, through a series of canonical transformation to reduce the order of the equations of motion to make it a more simple form.

具体做法有三种：（1）常数变异法，以二体问题轨道根数为变量建立摄动方程；（2）坐标摄动法，以天体在实际轨道上的位置与某一中间轨道上的位置差作为变量建立摄动方程；（3）变换理论，通过一系列正则变换，降低运动方程的阶数，使其具有更简单的形式。

The method of self-consistent field of the intermediate neglect of differential overlaphas been used in the calculations of the binuclear cluster, trinuclear unit of hexanuclear clusterand octanuclear clusters. The results are described as follows: The high-lying MO's of thetrinunclear and binuclear cluster are mostly composed of d-orbitals of the metal cores, and areconsidered as M-M bonding orbitals.

应用INDO／S方法对二核簇合物、六核簇合物中的三核片断和八核簇合物进行了计算，结果表明，二核簇合物与三核簇合物的前线占有轨道主要是由金属簇芯的d轨道组成，是M-M成键轨道。

With the expand of urban scope, great change have taken place in railroad hinge, many internuncial lines and lateral lines had been surrounded. Former status and function had been losed , capacity of transportation is surplus. Utilizing disengaged equipments and establishment to develop urban railway to service citizen , is becoming one of important approach to solved urban traffic jam.In this article, there are two important parts.

本论文在此双重背景下，以铁路参与城市客运为目标，通过分析国内外城市交通和轨道交通的现状及特点，在研究国有铁路参与城市轨道交通运营的可行性、必要性的基础上，对参与的重要性和意义进行分析，并对国铁参与城市轨道交通运营管理模式和行车组织方式做出了详细的论证和阐述。

This paper chooses the appreciation function on the land price of the urban rail transit as the main target.

本文介绍了城市轨道交通与城市土地利用的互动关系，介绍了轨道交通的外部效应，定性分析轨道交通对城市形态、社会经济、环境保护的深远影响。

With the rapid develpoming of rail transit in our country ,more and more attention has been paid to the great influence brought by the rail transit system on the whole urban space.This dissertation first reviews the land resource universality character and the process of theory development,it mainly study the influence on the urban land pattern and land use intension and land–value which rail transit causes to them.

本文从土地资源的一般性质入手，研究城市土地资源的性质及其利用的理论发展过程，着重研究城市交通发展对城市土地格局的影响，其次分析了快速轨道交通建设对沿线土地资源的利用强度、利用性质、地价等方面特征的影响，由此研究在轨道交通影响下的土地开发措施，让轨道交通对城市发展发挥导向作用。

The transport demand forecast model of rail transit of Suzhou city was built first and the relationship between ridership and population, total building area, residential area, commercial area are deduced. And at last, the influence of the land use pattern on the rail transit ridership is explored which can be used as reference for other rail development project.

基于苏州市城市土地利用优化前后的布局方案，建立城市轨道交通需求预测模型，获得轨道交通1号线客运量与沿线人口、总建筑面积、居住建筑面积、商业建筑面积的相关性，探索轨道交通沿线土地利用变化对其客运量的影响规律。

It introduces the developing actuality and researching background of magnetic aerotrain pier temperature changes,elaborates the problems existed in the project and the needs of track structure,material and accuracy,and brings forward a temperature grads mode which suits the track pier of magnetic aerotrain,so as to make economic,accurate guidance and reference for project design.

介绍了磁悬浮轨道梁结构温度变形的发展现状与研究前景，对轨道梁的结构、材料、精度要求以及工程中出现的问题做了全面的阐述，并提出了一种适合磁悬浮列车轨道梁的温度梯度模式，以便及时地为工程设计提供经济、准确的依据和指导。

With the development of track traffic, the deformation and destruction of track system is speeded up consequently. The major reason of track invalidation is the track vibration.

随着我国轨道交通的不断发展，列车运行速度不断提高，轨道系统振动的强度也随之增加，从而加速了轨道系统的变形和破坏。

With the monotone increasing and monotone decreasing ofψ-functions, we obtained some useful conclusions.

我们同样将ψ函数引入无限时滞的中立型随机系统，得到更普通的矩估计和轨道估计，在ψ函数单调减少和单调增加两种情况下，分别给出了方程解的矩稳定性和矩有界性，以及方程解的轨道稳定性和轨道有界性。

Secondly, three kinds of mathematics model of optical vortex beams were introduced here. Then the propagation dynamics of optical vortex beams through the non-axis symmetry system is studied, this chapter includes the introduction of the symmetry vortex beam and the non- symmetry vortex beam, the deduction of the Collins diffract integral formula for the non-axis symmetry system, and the transformation of the vortex beam passing through the non-axis symmetry system has been described by using the numerical simulation. Then the general calculation for the orbit momentum of vortex beams, the matrix form for the orbit momentum of vortex beams, and the photon method to describe the orbit momentum of vortex beams are also introduced here. Finally, the interference about optical vortex beams was studied.

本文对涡旋光束进行了较为全面的介绍和研究，主要内容包括：（1）光学涡旋光束的基本理论，主要是介绍了单个光学涡旋光束在柱坐标中的一些表征，涡旋光束的奇异相位和光学涡旋的相位结构；（2）光学涡旋光束的三种数学模型；（3）光学涡旋光束在非轴对称光学系统中的传播动力学，其中介绍了对称涡旋光束与非对称涡旋光束，推导了非轴对称光学系统的 Collins 衍射积分公式，并利用计算机模拟图描述了对称涡旋光束经过非轴对称光学系统后涡旋形态的改变；（4）涡旋光束轨道角动量的一般计算，涡旋光束轨道角动量的矩阵形式，光子法描述涡旋的轨道角动量；（5）涡旋光束的干涉。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。