what is the center of a trampoline called
Trampoline The fabric that users bounce on (commonly known as the "bounce mat" or "trampoline bed") is not elastic itself; the elasticity is provided by the springs that connect it to the frame, which store potential energy.
Milan Central railway station Milan Central or Milano Centrale is the main railway station of the city of Milan, Italy and one of the main railway stations in Europe. The station is a terminus and located at the northern end of central Milan. It was officially inaugurated in 1931 to replace the old central station (built 1864), which was a transit station but with a limited number of tracks and space, so could not handle the increased traffic caused by the opening of the Simplon tunnel in 1906.