钢铁材料是21世纪开发地下空间的主角

21世纪是开发地下空间的世纪,钢铁材料则是开发地下空间的主角.面临世界人口增加的压力,介绍了世界发达国家把地下空间开发利用作为城市建设的第二空间,地下工程建设,为21世纪钢铁业发展提供了广阔空间.介绍了我国结合城市改造,开发地下空间的情况和重点建设工程项目.

STEEL PRODUCTS--MAIN CHARACTER IN DEVELOPMENT OF UNDERGROUND SPACE IN 21sT CENTURY

st century, the century of development of underground space and the main role will be played by steel products Faced with the tremendous pressure of population blast in the world, the developed countries regard underground space as secondary space for city construction The underground construction makes a broad room for development of steel industry in 21 st century The exploitation of underground space and key engineering projects in association with the city reconstruction in China is introduced