... space flight simulation 航天飞行模拟 space flight system 航天飞行系统 space flight test cost 航天试验费用 ...
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space flight TT&C system 航天测控系统
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While putting money into renewed human space flight efforts, the proposal cuts scientific research, particularly the study of the other planets in our solar system.
CNN: NASA shoots for asteroid, new manned missions
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