拉伸断面分析
tensile fracture surface analysis
断面潮流分析
section power flow analysis
衬砌断面优化
lining section optimization
潮流断面
power flow at the cross-section of transmission lines
load section
power flow section
朝天门断面
Chaotianmen cross section
超浅埋超高断面
Ultra-shallow-buried and Ultra-high Sectional Tunnel
超大断面隧道
Tunnel with super large cross-section
Super section tunnel
tunnel with ultra-large section