N a channel that carries away surplus water, as from a dam (坝中的)溢洪道 (Also called wasteweir, spill)
The results indicate that this kind of energy dissipation function can improve the water flow regime in the stepped spillways and reduce the flow velocity by a wide margin.
结果表明：此种消能工能改善台阶式溢洪道的水流流态，大幅度地减小水流流速。
The water-wing always appears when discharge is smaller on steep slope of stepped spillways.
水翅是大坡度台阶式溢洪道在流量较小时出现的一种水流现象。
Stepped spillway is one of the new kinds of the spillways with high rate of energy loss, which is based on RCC technique .
台阶式溢洪道是结合RCC技术提出的一种具有高消能率的溢洪道新形式。
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