下穿通道在洪水期被封闭。

The underpass was closed through flooding.

根据风险调度原理，本文提出了水库洪水期风险调度方法。

Study on optimized and simulated risk operation mode for water supply reservoir;

当连续发生枯水期或洪水期时，部分河段的河势可能出现大的变化。

It might happen bigger changes in some sections during continuous dry period or flood period. It can build longer key bend works to prevent unfavourable...

松花江干流洪水特征是：洪水主要来自嫩江，洪水过程平缓，洪峰持续时间长。

The flood characteristic of the main stream of Songhua river is that the flood is mainly from Nenjiang river, the flood hydrograph is gently, the time of propagation of flood peak is longer.

洛学传承大致历经了鼎盛期、衰落期、中兴期、叛逆期和复兴期。

Pass on of Luoxue goes through the prosperity issue, decline one, resurgence one, rebelling one and rejuvenation one roughly.