MONY
发表于 2025-3-26 22:02:06
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candle
发表于 2025-3-27 04:48:51
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谦虚的人
发表于 2025-3-27 06:53:34
Scientific Objectives of Lunar Exploration,udies of the earth, its atmosphere, disturbances on the sun and the effect they produce on the earth, investigations of the moon and the nearby planets, and studies of the stars and galaxies..These projects draw on all the resources of chemistry, physics, astronomy, and the earth sciences. The union
描述
发表于 2025-3-27 12:14:48
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厚颜
发表于 2025-3-27 14:45:55
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大炮
发表于 2025-3-27 20:11:02
Radiation Shielding of Lunar Spacecraft,tral, and temporal variation of charged particles from the Van Allen belts and cosmic radiation is established..The attenuation of charged particles has been calculated using data on the range and relative energy loss as function of energy for protons and electrons in various materials. Calculations
协定
发表于 2025-3-27 23:15:30
A Family of Radioisotope-Fueled Auxiliary Power Systems for Lunar Exploration,ermal energy derived from the decay of a selected radioisotope is converted directly to electrical energy by static thermoelectric conversion systems..After demonstration of the initial prototype unit (SNAP 3) at the White House on January 16, 1959, several missions were proposed as reasonable appli
使入迷
发表于 2025-3-28 04:23:50
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漂亮
发表于 2025-3-28 06:46:32
Horizon Trackers for Lunar Guidance and Control Systems,early as the summer of 1959. It is the purpose of this paper to discuss the extension of these techniques to the problem of lunar guidance and control..In one sense, the lunar problem is somewhat simpler than the problem of the earth horizon-track er problem due to the lack of an atmosphere near the
meretricious
发表于 2025-3-28 13:09:32
Soft Lunar Landing Guidance Sensor,e Nova vehicle will be landing payloads of 20,000 lb — enough payload to permit a man to go to the moon and come back. The lack of an appreciable atmosphere on the moon rules out the possibility that these space vehicles could make soft landings based on the use of aerodynamical devices (parachutes,