The stage-discharge curve at the downstream boundary is combined with the continuity equation of the St.
本文基于河道下断面的水位流量关系和连续方程的联立求解 ，导出了水位流量关系型的下边界条件。
The downstream area of Ruilijiang River-Dayingjiang River is situated in the southwest of Yunnan province and boundary of Guangxi province.
云南瑞丽江—大盈江中下游地区位于我国西南边境的云南、广西陆地边界地区。
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