Rockets are tall, but not particularly wide.With inflatable spacecraft, the structure can be packed tightly into the payload and then filled with air once in orbit.
Rockets are tall, but not particularly wide. With inflatable spacecraft, the structure can be packed tightly into the payload and then filled with air once in orbit.
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7. 以激光摄像式轨距-轨向系统替换现有的光电伺服式轨距-轨向系统。
The current photoelectric servo gauge-alignment system is replaced by laser video camera gauge-alignment system.
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8. 全面分析了共轨蓄压式电控喷油器的泄漏部位及影响因素，进行了静态和动态的密封性试验。
This paper analyzes the leakage and its influence factors of the common-rail accumulator type electronic control injector. The static and dynamic sealing test is done.
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9. 这个测量放大器是设计安装在控制机箱内，也可以安装在由挤压型材制成的顶帽式导轨外壳的承载轨上。
The measurement amplifier is designed to be installed in a control cubicle and can be put on a carrying rail in a top hat rail housing made of extruded sections.
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10. 级间热分离具有改善和提高继续飞行级的稳定性和入轨精度而被固体弹道式导弹广泛采用。
The thermal stage separation being provided with improving and enhancing stability and orbit precision for flight was abroad adopted in solid-propellant ballistic missile.
The work roll surface can be ground on-line by a non-driven cup type of on-line Roll Grinder(ORG) installed in a strip mill to maintain the appropriate roll shape.
The practical construction results show that the computation theory of this rails beam is credible and this rails beam is a good method to enhance rail's span in the crossing site.
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13. 介绍了一种新型的底卸式箕斗卸载曲轨，并总结了固定卸载曲轨设计中需注意的几个问题。
The paper introduced a new type of dump track for bottom dumping skip, and some issues need to be noticed in design are summarized.
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14. 吸气式高超声速飞行器是下一代单级入轨和高超声速巡航研究的重点飞行器。
Air-breathing hypersonic vehicle(AHV) has been the next generation single stage to orbit vehicle and hypersonic cruise vehicle.
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15. 针对小卫星星座，进行星座发射中的最优脉冲式变轨研究。
In this paper, thinking of small satellite constellation, optimal impulse orbit transfer is studied for constellation launching.
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16. 给出了计算气轨上滑块运动加速度的另一公式，并用实验进行了验证。
This paper offers another formula to calculate acceleration of gliding blak movement on air cushion track, and it has been proved with experiment.
Abstract: Capture is an important part of the on-orbit service for a spacecraft. A space arm driven only by articulated drivers is complicated and has a large mass.
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18. 给出了形成星座的脉冲式变轨的基本原理；
The paper gives the principle of impulse transfer for making constellation.
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19. 着重介绍了轨行式模板台车衬砌施工技术，对浅埋暗挖、大跨隧道衬砌施工，有一定的参考价值。
The technology of lining by rail shuttering drill carriage is emphatically introduced, which has a definite reference value to the lining construction of the shallow buried, under...
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20. 文中基于卫星相对运动状态转移方程，推出了星座双脉冲式变轨控制的理论解；
In this paper, thinking of three-satellite constellation, optimal impulse orbit transfer is studied for constellation launching.
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21. 针对实时嵌入式系统在轨维护需求，提出了一种基于FPGA的嵌入式系统软件在轨重注方法。
According to the requirement of on-board maintenance for real-time embedded system, a novel method for software on-board reprogramming was suggested based on FPGA.
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22. 年代初，北京城建设计院等完成液化石油气移动式气压焊轨技术的研究和应用。
In the early 1980s, the Beijing urban construction design completed liquefied petroleum gas (LPG) mobile pneumatic rail welding technology research and application.
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23. 年代初，北京城建设计院等完成液化石油气移动式气压焊轨技术的研究和应用。
In the early 1980s, the Beijing urban construction design completed liquefied petroleum gas (LPG) mobile pneumatic rail welding technology research and application.
