@目 1.1 Application of Concrete Structures 同源大学 士本工鞋季悦 1.1.2 Infrastructures Most of infrastructures such as tunnels,bridges,highway facilities,city viaduct,subway, and so on,were made with concrete structures9 Most of infrastructures such as tunnels, bridges, highway facilities, city viaduct, subway, and so on, were made with concrete structures 1.1.2 Infrastructures 1.1 Application of Concrete Structures