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一、前言在河道上修建挡水建筑物时,常常需要推求缺口、底孔联合泄流时的下泄流量和相应的上游水位,如图1。
I. INTRODUCTION When constructing a retaining structure on a watercourse, it is often necessary to deduce the gap, the discharge rate at the discharge of the bottom hole and the corresponding upstream water level, as shown in Figure 1.