1600℃ energy-saving gas tunnel kiln
3D monitoring of tunnel slope deformation
a little spacing tunnel
a shallow mined large-span crossover tunnel
abrupt changes in the cross-sectional area of a tunnel
Access Tunnel
隧道通道
刷引线
人员进出地道
辅助隧洞
引水隧洞
交通隧洞
进口隧道
横洞
通道
隧道
Access Tunnel to Powerhouse
active control wind tunnel
Acute carpal tunnel syndrom
adaptive-wall wind tunnel
additional air resistance in tunnel