siphon spillway

The chute spillway of Xingfu Reservoir is transformed into a siphon spillway.

虹吸溢洪道是一种增加溢洪道泄流能力的有效方法。

The section size of the tunnel-spillway of is 14.

洪家渡水电站洞式溢洪道的断面尺寸为14。