轨道的

The Solar System orbits the center of the galaxy in a nearly circular orbit.

太阳系轨道中心的银河近圆形轨道。

Director of photography in the use of a circular orbit of photography, cameras along the track in the horizontal plane is better to complete a lap track photography.

在拍摄中导演利用了圆形的摄影轨道，摄像机沿着轨道在水平面上正好转了一圈完成跟踪摄影。

LRO's final orbit will be a circular polar orbit approximately 50 km above the Moon's surface (a little over 30 miles).

LRO的最终轨道将是一个圆形极地轨道，离月球表面（略微超出30英里处）约50公里。

Track:(1) One of the concentric rings of a disc along which data is stored.

1轨道，(2)字母间距：(1)轨道是磁碟上，用来贮存数据的同心圆环。

Dynamic analysis was used by train-bridge model to elevated railway system considering rail irregularity .

考虑轨道不平顺，采用整体车辆和桥梁组合的计算模型，对高架轨道进行车-桥动力分析。

Secondly, the model of the passengers forecast were studied. The corridor analytic method was proposed in the metropolis rail transit passenger flow forecast application, The traffic district for passengers forecast was raised, which is centered on the hub, circled with the radius of attrahent scope .The forecast model applying toestimating the volume of collecting and dispersing passenger generation and transfer passenger distribution are raised, the example proved that the models are reliability and practicable.Thirdly, the plan theories of metropolitan rail transit were studied.

研究了都市圈城际轨道交通客流预测的方法；提出了走廊分析法在都市圈城际轨道交通客流预测中的应用，提出了以枢纽节点为中心、以吸引范围为半径的圆形范围为客流预测的虚拟交通小区的划分方法；并依此在确定吸引范围的基础上，提出了基于效用矩阵的都市圈轨道交通客流预测模型，实例分析证明该方法具有较强的实用性和可靠性。

In the 2A1 distorted trigonal bipyramid structure ,the single non equivalent Ga atom has the population of 4s 4p ,while the two equivalent Ga atoms have the population of 4s 4p .this compares with a Ga population of 4s 4p in the undistorted D3h structure ,hence the jahn-teller distortion causes depletion of the charge density on the 4s orbital of the non-equivalent Ga atom, and enhancement of charge density on the 4s orbital for the two equivalent atoms .an opposite trend is observed for the 4p orbitals of these Ga atoms .the P population for the two equivalent atoms is 3s 3p .the populations of the other 2B1 state with the edge-capped tetrahedral structure are similar with the exception that all three Ga atoms have similar but not identical populations .

在2A1被变形的三角bipyramid结构，唯一非等效Ga原子有4s 4p的人口，而二个等效Ga原子在未变形的D3h结构有4s 4p 。this的人口和4s相比4p的Ga人口，因此jahn出纳畸变在non-equivalent Ga原子的4s轨道导致电荷密度的取尽，并且电荷密度的改进在4s轨道为二个等效原子。an在趋向对面对这些Ga原子4p轨道被观察。the人口为二个等效原子是另一个2B1状态3s 3p 。the人口与边缘加盖的四面体结构是相似的P 除之外全部三个Ga原子有相似，但不相同人口。

A new mathematical model is put forward numerically to simulate the wheel ovalization.. In the numerical simulation, the dynamic model of a half railway vehicle coupled with a tangent track is employed. Using the new numerical method investigates vehicle-track coupling system dynamic responses including lateral and vertical displacement of wheelsets and the vehicle, lateral and vertical vibration acceleration of the track at different phase angle of the two side wheels of the same wheelset, which are compared with that of the traditional model. The numerical results show that the discipline and frequency of dynamic responses are accordant, amplitude and phase of lateral dynamic responses are different. It is concluded the traditional track geometric irregularity excitation model does not simulate the effect of periodic wheels ovalization on vehicle-track coupling system dynamic behavior truly, the new model is more accurate and reasonable.

本文研究了车轮二阶周期性非圆化—椭圆化，建立了一个新的模拟车轮椭圆化的数学模型，结合车辆－轨道空间耦合动力学模型，计算了同一轮对左右车轮不同相位和车轮椭圆度下轮对和车体的横、垂向位移，钢轨横、垂向振动加速度，并与传统模型计算结果作了对比，分析表明两种模型的动力响应变化规律和频率一致，但横向动力响应幅值和相位均存在不同程度不可忽略的差异，因此传统的轨道几何不平顺激励模型不能真实模拟车轮的周期性椭圆化对车辆－轨道耦合动态行为的影响，而本文模型更能反映实际椭圆车轮与钢轨接触情形，计算方法准确而合理。

Let's say such a scene: the estimated battle range is less than 400 sq.km, and the fort may be set up on various landforms such as top of a mountain, cliff side, gorge, inside a gorge cliff, desert, floating platform on a sea, basin, plain, virgin forest, behind a large fall, underground grotto, the fighters chase one another attacking, or work with gunboat for mastery of the sky.

地面基本上是不去地，我们可以设想这样的场景，一个玩家建立的要塞城市正在被另一个玩家攻击，预计作战范围不会超过400平方公里，这个要塞可能建立在（山顶，悬崖边，峡谷中，峡谷壁内，沙漠，海洋浮动平台，盆地，平原，原始森林，大型瀑布后，地下岩洞）等多种地形上，战斗机在互相咬尾攻击，或者配合炮艇机夺取制空权，轰炸机/鱼雷机摧毁对方的防御工事，而要赛的防御火力把天空都照亮了，指挥官的引导光束引导轨道上的远程火力支援舰的舰炮攻击，而地面的轨道炮也在开火，不断的有金属残骸从轨道滑落。。。。

Generally speaking, as long as you are a good measure of the total width of the window and the job can calculate the required amount of cloth, but if the measure on its own, then have to pay attention to some details, such as the window of a high degree of measurement from the start Chuang Lianhe To outweigh the lower edge of the window will not be emptied of its width is also probably have to pay more on the side of 5-10 cm, but if they are Banyao have to pay attention to whether there is a window sills, to be done within the window frame, then have to carefully Measure may not yield more than half a centimeter card does not go in and a half centimeters or less emptied of the situation, the track can be installed on the wall or ceiling should also note that some tracks can be linked to the ceiling can also be linked to the walls, some not I suggest you bring home a good-size windows notes, the regional states, take good pictures of each window to the stores, they will suggest you how to use the track and practice

一般来说只要您丈量好窗户的总宽和总高就可以计算所需的布量，但如果自行丈量的话有些细节得注意，比如说窗的高度得从窗帘盒内开始丈量到盖过窗的下缘才不会走光，宽度也是，大概一边都得多加个5-10公分，但如果是半腰窗就得注意是否有窗台，要做在窗框内的话就得仔细丈量不然有可能产多了半公分卡不进去或是少了半公分走光的状况，轨道可以安装的墙面或是天花板也要注意，有些轨道是可以挂天花板也可以挂墙壁的，有些不行，建议你把家里的窗户尺寸做好一份笔记，写明区域，拍好每一窗的照片给店家看，他们会建议您用怎样的轨道和做法

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％。