一个有效的预排水系统在一个有限的区域内，有一个高水头，巨大的流入，重要的是要防止水浸事故发生的海底隧道。
An effective pre-drainage system in a limited area that has a high water head and huge inflow is important to prevent flooding accidents during subsea tunnelling.
隔断安全性高，介质通过防止器时水头损失小，有效的防止倒流污染。
The invention has the advantages of high partition safety, small loss for a tap when a medium passes through the preventer and effective prevention on the pollution caused by the backflow.
研究结果表明，采用适当的辅助消能工能有效地解决低水头泄水建筑物的消能防冲问题。
The result of the experiment indicates that the assistant energy dissipater can solve the problems of energy dissipation and erosion-control of flood discharging structure for low Froude number flow.
研究结果表明，采用适当的辅助消能工能有效地解决低水头泄水建筑物的消能防冲问题。
The result of the experiment indicates that the assistant energy dissipater can solve the problems of energy dissipation and erosion-control of flood discharging structure for low Froude number flow.
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