轨道的

From the national conditions, a public-private partnership by domestic rail transportation system in the area and the problems facing the challenges of private capital involved in the analysis of the cause of the existence of rail transportation risks presented by the government to attract private capital in the enterprise and eliminate or reduce the risk of private responses;At the same time, from a rational allocation of risks and responsibilities of the position, fare adjustment mechanism discussed in the areas of land development and enhance the attractiveness of orbital transport to the impact of private capital.

从国情出发，提出了公私合作制在国内轨道交通领域面临的问题与挑战，分析了民间资本介入轨道交通事业所存在的风险，提出了政府为吸引民间资本介入而化解或降低民营企业风险的对策；同时，从合理分配风险、政府职责定位、票价调整机制以及土地开发等方面论述了增强轨道交通事业对民间资本吸引力的影响。

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。

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。

Both problems are popular topics in the field of orbit support for space mission.

本文是有关航天工程预研课题中的一部分，以航天器轨道力学为基础，结合一些具体的航天应用背景，对天地基联合定轨方法和月球探测器轨道支持这两个目前航天任务轨道支持的热点问题作了相应的分析和研究。

The motion of deep space probe is usually divided into three stages: parking orbit near Earth, transfer orbit toward the target body and the orbit around the target The Parking orbit, which is a kind of orbit of earth satellites, is not discussed in this thesis.

深空探测器的运动通常分为三个阶段：近地停泊轨道，飞向目标天体的过渡轨道和环目标天体的运行轨道，相当于目标天体的卫星。

The motion of deep space probe is usually divided into three stages: parking orbit near Earth, transfer orbit toward the targe...

深空探测器的运动通常分为三个阶段：近地停泊轨道，飞向目标天体的过渡轨道和环目标天体的运行轨道，相当于目标天体的卫星。

It canprovide dynamic responses of the system with changes of wheel load,vehicle velocity, frequency and irregularities of the track, and distribution of dynamic responses in the subgrade can be given, also beused to select parameters, optimize designs and forecast dynamicproperties of the system, etc.(2) Based on Timoshenko beam and geostatic theory, couplingrestricted equations of various finite elements are founded. The restrictedequations have been dealt with by Lagrangian enlarging multipliers.

该模型充分地考虑了系统的空间、时变、耦合特性及路-桥-隧过渡段的设计断面和设计参数，可提供无碴轨道路-桥-隧过渡段系统的动态响应时程及动态响应场分布等，具有合理选择无碴轨道过渡段设计参数、优化设计及预测动力性能等功能，从而为高速铁路无碴轨道过渡段系统的设计提供了理论分析依据。

According to the characteristics of the wayside frequency-shift signal spectrum,and based on a great number of computer emulators and real-time experiments and on non-complete periods sampling,the feasibility of applying the under-sampling technology to the real-time FFT analytical method of tramroad FSK signal is validated.

针对轨道移频信号的频谱特点，采用欠采样技术对轨道移频信号进行非整周期的采样，经过计算机仿真实验，验证了基于非整周期采样方法对轨道移频信号进行实时傅里叶变换分析检测的可行性，证明采样方法满足检测指标的要求。

Based on analyzing disadvantage of URT′s passenger flow forecast by the joint mode split\ assignment model on all modes OD matrix, this paper presents a URT's passenger flow forecast with the joint mode split\assignment model on cooperant and competitive OD matrix Firstly, all modes OD matrix can be gained by trip production and distribution forecast Secondly, coopperant and competitive OD matrix can be achieved by layered and politic mod...

在分析基于全方式OD采用联合方式划分交通分配模型进行轨道客流预测不足的基础上，提出了一种基于合作竞争类OD的采用联合方式划分交通分配模型的轨道交通客流预测方法，即由出行产生和分布预测得到全方式的OD矩阵，通过分层次策略性交通方式划分法得到合作竞争类出行OD矩阵，然后采用联合方式划分交通分配模型进行轨道线网客流预测。

It follows a rather unusual orbit, heliocentric instead of geocentric , trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called "earth-trailing" orbit).

因此不寻常的轨道，日心说代替地心，尾随和漂流约0.1每年天文单位远离地球的轨道上（所谓的&地球尾随&轨道）。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。