中国载人航天工程是我国航天史上迄今为止规模最大、系统组成最复杂、技术难度和安全可靠性要求最高的国家重点工程。全国数千家单位,几十万科技人员承担研制、建设、试验任务,就载人航天工程而言,它是这个大系统的集成,主要由航天员、空间应用、载人飞船、运载火箭、发射场、测控通信、着陆场、空间实验室八大系统组成。怎 China’s manned space project is the country’s key project to date with the largest scale in space history, the most complicated system composition, and the most demanding technical and safety and reliability requirements. As far as manned space projects are concerned, it is the integration of this large system. It is mainly composed of astronauts, space applications, manned spacecraft, launch vehicles, launch vehicles, Launch site, measurement and control communications, landing site, space laboratory eight systems. How