圆形过水断面
circular wetted cross section
free flow in circular section
circular cross section
梯形断面水面线
water surface profiles of trapezoid
水面过饱和
supersaturation with respect to water
断面水工模型试验
section hydraulic model test
固定断面水深
water depth at fixed sections
监测断面水质达标情况图
Surface Water Quality Map for Monitoring Sections
近水面水翼
hydrofoil near free surface