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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
However the arguments we make are different to this and are focussed mainly upon the benefits to earth based science, medicine, technology and education which would accrue from a manned space flight programme.
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Manned space flight requires the highest degree of attention to crew safety, thus understanding and recognizing all potential risks involved.
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Demineralization of bone also poses one of the most severe limitations on long-duration manned space flight.
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Consequently, the first time the Shuttle was flown in a high altitude supersonic condition was during the first manned space flight in 1981.
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Finally, there are still many unresolved technical problems associated with prolonged manned space flight beyond the van Allen belts.
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China recently joined Russia and the US as the only space powers with demonstrated manned spaceflight capabilities.
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ESA's space science and earth science departments are located here, and so are the directorate of manned spaceflight and microgravity research.
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It is distributed free-of-charge to all readers interested in ESA's manned spaceflight and microgravity activities.
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It is free to all readers interested in ESA's manned spaceflight and microgravity activities.
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In future the needs of manned spaceflight are expected to become increasingly important when the International Space Station is taken into use.
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| | In this paper we describe a signal processing method of the measurement sub system for manned spacecrafts and its key techniques such as adaptive correction of systematic error,adaptive line enhancer and maximum likelihood estimate of multitone parameters. | | 介绍采用侧音测距、载波测速的载人航天测量分系统的信号处理方法及其关键技术的工作原理。其关键技术主要是系统误差的自适应校正、自适应谱线增强、多音参数的最大似然估计。 | | 文摘来源 | | In this paper,three phases of space TT&C system is introduced,ie.seperate,unified,space TDRSS and GPS.New application of TT&C system is also introduced.Development trend is summarized. | | 本文综述了航天测控体制的三个发展阶段———分离测控系统阶段、统一载波测控系统阶段、天基测控系统(TDRSS和全球定位系统(GPS))的阶段。并对近代测控系统的新应用进行了介绍,如载人航天、小卫星测控、巡航导弹测控以及深空跟踪测控。最后概述了航天测控的发展方向。 | | 文摘来源 | | This paper describes the necessity to introduce GPS technology into the search and rescue activities in manned spaceflight landing site. The purpose and realistics significance to develop Assisted Decision-making System for Search and Rescue in Primary Landing Site of Manned Spaceflight Missions is discussed briefly, as well as the design method and function of the system. Its application and validation in actual mission is also presented. | | 对航天测控领域引入GPS技术应用于载人航天工程中着陆场系统搜索救援工作的必要性进行了讨论;简述了研制《载人航天任务主着陆场搜索救援辅助决策系统》的目的和意义及系统设计的总体思想、技术途径;系统地描述了系统的功能;同时,也介绍了系统在实战任务中实际应用的情况。 | | 文摘来源 | |   | | << 更多相关文摘 |
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