anti-arc segment of spillway tunnel
compound expression spillway tunnel of inner energ
Compound Expression Spillway Tunnel of Inner Energy Dissipation
diversion tunnel and spillway tunnel
dragon-raise-head free flow spillway tunnel
Dragon-Rraise-Head free flow spillway tunnel
free-flow spillway tunnel
gyrating flow spillway tunnel
optimization of the shape of the spillway tunnel
the swirling flow spillway tunnel