abstract
1 large research infrastructures and national innovation system
    1.1 definition of national large research infrastructures
    1.2 position and role of large research infrastructures in the development of the country
    1.3 development trend of large research infrastructures
    1.4 the current situation and tasks of large research infrastructures in china
2 macro thought on development of chinas large research infrastructures in the next 50 years
    2.1 guideline for making roadmap
    2.2 development goal
    2.3 guideline for development
3 particle physics, nuclear physics and nuclear energy
    3.1 particle physics
    3.2 nuclear physics
    3.3 nuclear energy application
4 astronomy and space science