This paper investigates the orbit maintenance of long life satellites.
本文研究近地轨道卫星长期在轨运行的轨道维持问题。
High precise real-time autonomous relative orbit determination between distributed spacecraft is a key technology in the task of spacecraft formation maintenance.
分布式航天器间相对位置的实时高精度测量是分布式航天器实现空间队形保持的关键技术之一。
The Neutral Buoyancy Simulation Test is of significant importance for training astronaut, large space structure design, structure assembly on-orbit and maintenance technology research.
中性浮力地面模拟试验不仅可以用来训练航天员，对大型空间结构的设计及在轨组装与维修技术研究也具有重要的作用。
The spacecraft USES a bipropellant integrated propulsion system to reach lunar orbit as well as orbit and attitude maintenance while orbiting the Moon.
该航太器采用一个整体的二元组推进系统进入月球轨道和维持轨道高度及状态。
It plans to build in-orbit servicing and maintenance systems for spacecraft and make in-orbit experiments on new theories, technologies and products by tapping various resources.
启动空间飞行器在轨服务与维护系统建设，利用多种资源，开展新原理、新技术、新产品在轨试验验证。
It plans to build in-orbit servicing and maintenance systems for spacecraft and make in-orbit experiments on new theories, technologies and products by tapping various resources.
启动空间飞行器在轨服务与维护系统建设，利用多种资源，开展新原理、新技术、新产品在轨试验验证。
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