The descending trajectory and the guidance method were presented for the braking phase of lunar soft-landing from a circular orbit.

So to go around this circular orbit will take the same amount of time as to go around this one, and that is by no means obvious.

沿着圆形轨道运行的，时间和沿着椭圆轨道，所花费的时间是一样的，这决非显而易见的。

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Compared with position tracking method, circular orbit tracking method is not influenced by the unevenness of apparent motion and has highly tracking precision.

和位置跟踪法比较表明：该方法不受空间目标视运动不均匀性的影响，有非常高的跟踪精度。

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There's something called the... if I can get wonky for one moment... the innermost stable circular orbit,

让我想一下，有一个东西叫做最内侧稳定圆形轨道，

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As another example the center of mass of the earth and moon moves in an approximately circular orbit around the sun.

作为另一个例子，地球和月亮的质心就是在一个绕太阳的近似的圆轨道上运行。

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The analysis shows that the scanning field of view can be improved no less than 140% compared with the circular orbit scan mode.

分析表明，在扫描锥束偏转两次情况下，其有效扫描视野比圆轨道扫描方式提高1.4倍以上。

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An analytical method allowing exact reconstruction from cone-beam projection data which are detected from a single circular orbit is discussed.

本文介绍了一种可以对来自于单一圆轨道的锥束投影数据进行精确重建的分析方法。

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I now go into an elliptical orbit because the new velocity is no longer the right velocity for a circular orbit.

我现在要进入一个椭圆形轨道，因为新的速度已经，不是圆形轨道中的速度。

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However, this algorithm does not apply for circular orbit cone-beam scan with line-focus X-ray source.

但是，这种算法不能满足线X射线源圆轨道锥束扫描的情况。

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Using the experimental data of circular orbit cone-beam large-field-of-view scan, the reconstruction algorithm creates the right images.

利用这种算法，对圆轨道锥束大视场扫描3D-CT实验数据进行重建，获得了正确的图像。

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Post-Newtonian Gravitational Radiation from Binary Stars in Circular Orbit

双星圆轨道的后牛顿引力辐射

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Reconstruction Algorithm for the Circular Orbit Cone-beam Scan 3D-CT with Line-focus Source

线源圆轨道锥束扫描三维CT重建算法

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If the spacecraft into a 185 km high circular orbit required speed of 7.8 km/ s;

如把航天器送入185公里高的圆形轨道运行所需的速度为7.8公里／秒；

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Discussion About Closeness of Orbit and Steadiness of Circular Orbit for Motion of Central Forces

有心力运动轨道封闭性与圆轨道稳定性讨论

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spacecraft into the 1000 km high circular orbit required speed of 8.3 km/ s;

航天器进入1000公里高的圆形轨道运行所需速度为8.3公里／秒；

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Possibility of Exact Reconstruction for Cone-beam Projections from A Single Circular Orbit

基于单一圆轨道的锥束投影的精确重建的可能性

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You've got negative charge in motion, and it's in a circular orbit.

负电荷在运动，它们处在一个环形的轨道中。

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Analysis of Orbit Dynamics for Spacecraft Octahedron Formation Configuration in the Circular Orbit

圆轨道航天器八面体编队构型轨道动力学分析

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Satellite Formation Establishing in Near Circular Orbit

近圆轨道卫星编队捕获技术研究

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Numeral Solution and Analytical Solution of Friction on Object Sliding down on Circular Orbit

物体沿圆弧轨道下滑时摩擦力的数值解与解析解

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The design method of the orthogonal circular orbit satellite constellation supporting global coverage is studied.

讨论了全球覆盖正交圆轨道星座设计方法。

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