我们有一个在轨运行的电子和一个静止原子核。
本文研究近地轨道卫星长期在轨运行的轨道维持问题。
This paper investigates the orbit maintenance of long life satellites.
研制出一套模拟控制与测量装置，模拟斯特林制冷机在轨运行的工作模式，为其在空间应用提高可靠的试验数据。
A device of analogue control and measurement is developed. It can simulate the working mode of Stirling cooler in orbit in order to provide reliable test data for the use in space.
GPS和GLONASS作为当今世界上在轨运行的两大卫星导航系统，其广播星历参数的设计和算法各具特点。
Designs of the broadcast ephemeris parameters and algorithms of GPS and GLONASS, two major operational satellite navigation systems today have their respective features.
欧洲空间局在轨运行的XMM-牛顿天文台对名为1h0707 - 495的活跃星系核心中的黑洞进行了研究。
The European Space Agency's orbiting XMM-Newton observatory studied the black hole in the core of an active galaxy known only as 1h0707-495.
根据卫星在轨运行数据，给出了卫星在轨运行的部分曲线和姿态控制、轨道控制的指标实现情况，对姿态控制分系统方案进行了在轨验证。
According to operation data of the satellite on orbit, some operation results and the specification conformity are presented. Furthermore, the control system scheme is demonstrated on orbit.
卫星在轨测试是监测卫星平台及其遥感器在轨运行情况及性能衰减程度的有效手段，也是卫星数据处理和应用的前提与基础。
Satellite on-orbit test is a useful way to monitor satellite platform, on-orbit status and attenuation degree of sensors, and is the premise and base for satellite data's processing and application.
在一些城市，第三道铁轨(电动机车的输电轨)给通常在地下运行的地铁列车供电，电力通过这道铁轨传输。
In some cities, a third rail provides power to a subway train, usually operating underground; electricity passes through the rail.
在轨测试结果表明，两星的在轨运行、功能和性能符合任务书的要求。
And the orbital detected results showed that the all operation, function and performance of two satellites met the certain requirement.
另一方面，随着卫星遥感器在轨运行时间的增长，其性能会逐渐退化，MTF也会逐渐下降。
On the other hand, when the remote sensor runs on orbit, its performance will gradually degenerate and MTF will gradually descend too.
空间相机在轨运行之后，由于环境的变化和时间的推移，空间相机的响应性能必然会发生衰减。
When flying on orbit, with the change of environment and time, the response capability of a space camera must be attenuated.
在轨卫星运行仿真平台的研究涉及了卫星轨道力学，计算机仿真和地理信息技术等多学科领域。
The research of simulation platform of satellite in orbit involves some field including dynamics of satellite orbit, computer simulation and geographical information technology.
随着航天活动的开展，空间碎片环境严重地威胁着在轨航天器的安全运行。
With the increase of the human aerospace activities, space debris environment is seriously threatening in-orbit spacecraft safe operation.
本论文将卫星轨道预报技术和计算机仿真技术相结合，提出了基于GIS控件建立卫星在轨运行仿真平台的设计思想。
In this thesis the idea of building a simulation platform of satellite in orbit based on GIS control is present, combining the orbit predict technology and computer simulation technology.
在轨测试和试运行期间，C星的CDAS不仅解决暴露的问题，而且进行适应性调整。
The problems of CDAS for C satellite were solved and adaptability adjustment was completed during the periods of on-orbit test and experimental operation.
对于相同的云图成像基准，地面测试与卫星在轨运行时，与模拟遥测值的对应变化关系是一致的。
When the satellite works on orbit or is testing on ground, the relative changing laws of simulated telemetry values are consistent with the same cloud picture imaging standards.
卫星在发射过程中的振动环境比其在轨运行时更为恶劣，整星隔振和卫星局部减振可以使卫星的动力学环境得到改善。
The whole-spacecraft vibration isolation technology and the spacecraft local vibration attenuation can improve the dynamic environment of the spacecraft.
为确保相机在轨正常运行并拥有较高的成像品质，需要对相机进行精确的热控设计。
Therefore, the precise thermal design become the key point to ensure the camera working normally with high imaging qualities.
空间光学遥感器在轨运行过程中要承受太阳辐射和空间冷热沉、黑热沉等恶劣温度环境的影响。
The space optical remote sensor is influenced by the solar radiation, albedo, earth emitted infrared and other heat sources as flying in the heat dreariness astrospace.
经过在实际场地进行的运行试验表明，该系统能够对任意形状的参考轨线进行满意地跟踪，达到了预期的效果。
Experimental results demonstrate the validity of the system that can realize real-time tracking to arbitrary shape trajectories, which has achieved the expected results.
经过在实际场地进行的运行试验表明，该系统能够对任意形状的参考轨线进行满意地跟踪，达到了预期的效果。
Experimental results demonstrate the validity of the system that can realize real-time tracking to arbitrary shape trajectories, which has achieved the expected results.
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