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粗糙系数n水力半径R1/nR2/3i1/2v(m/s)0.0252.216311494401.6998888790.0141421360.962底宽b水深h边坡m边坡m2面积A湿周X163.042.56.2571.74432.371XX河梯形明渠A(m²)Q(m³/s)71.74468.989比降i上口宽0.000231.2梯形明渠设计流量(m³/s)68.83