轨道的

In the critical manoeuver, the orbit for Chandrayaan-1 was once again raised on Tuesday morning and now it is orbiting in an elliptic orbit which will take it right upto the moon.

在关键manoeuver ，轨道为月球- 1 ，再次提出星期二早上，现在是绕在一个椭圆轨道将采取正确达月球。11月8日，这是可能达到月亮的晚上。

Because of the fail safe construction track occupied could mean: track not determined free.

考虑故障安全结构，轨道占用的含义为：轨道未被确认为空闲。

Choosing Huzigou as the experimental site, the elevation, azimuth, hour angle and so on of the surrounding undulating terrain was measured. The solar visual orbit map was developed and the solar visual orbit equation was applied to calculate the solar elevation angle of morning shelter and dark shelter and the sunshine hours.

方法］选择户子沟为试验点，实地测量周围起伏地形的仰角、方位角、时角等，绘制太阳视轨道图，应用太阳视轨道方程，计算出晨蔽、昏蔽太阳高度角，进而计算出日照时数。

Should all the tracks of high speed railway, intercity railway and local railway be protected by weather shed?

是否全部高速，城际及地方轨道线的轨道都需有盖？

Light railway, subterranean railway, interurban railway and other railways constitute a fast urban railway transportation system.

城市轻轨铁路与地下铁路、市郊铁路及其他轨道交通构成了一个城市的快速轨道交通体系。

And welded rail s have begun to replace jointed rail .

焊接轨道已开始代替有接头的轨道。

Surveys found that a concentration of land in areas of rail transportation on the 5th line is to track traffic on the 5th line up along the key development trends.

经过调查发现，公告土地集中在轨道交通5号线地区，是促使轨道交通5号线沿线楼盘走势上扬的关键。

Adjust the leveling screw at the end of the track to raise or lower that end until the cart placed at rest on the track will not move toward either end.

然后调整轨道末端的水平螺丝，来抬高或降低这一端，直到静止放在轨道上小车不再向某一端运动。

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。

One family of orbits asymptotically approaches the periodic orbit.

一个家庭的轨道接近渐近周期轨道。

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％。