tunnel stern

diversion tunnel and spillway tunnel

option of separate highway tunnel and Metro tunnel

Part-tunnel and Part-roadbed Type Tunnel

power tunnel and tailrace tunnel system

railway tunnel under crossing the highway tunnel

Shield Tunnel and Rock Tunnel

water tunnel and salt tunnel

3-D ship stern viscous flow

ahead and stern

allogeneic hematopoietic stern cell transplantatio

anchor by the stern

anchor head and stern

anchoring by the head and stern

angle of stern rake

arch-stern ship

axial stern ramp

bluff stern

bow and stern line