6band
The diagrams show the cross-sections of two tunnels, one joining France and Italy and the other joining two Japanese islands v. 1 The diagrams compare the differences of the cross-sections of two tunnels. Figure 1 shows the cross-section of a road tunnel joining two European countries; while figure 2 illustrates a railway tunnel linking two islands in Japan.
Overall, as can be seen from the diagrams, the Seikan Railway Tunnel...