cross section distortion
distribution section of first contacting point
least distribution section
Cross-sectional distortion
cross-sectional stress distribution
distortion of cross-section
Distortion of the cross section
engineering district；maintenance of way section；track division；track district；track maintenance division
intensity distribution in cross-section
Jinan urban district section
large section and small clear-distance tunnels
large section low net-distance tunnel
Long distance section between two adjacent stations
Normal Section Distance
section distortional buckling