S curve, time unit hydro graph and surface runoff hydrograph can be gotten through instantaneous unit hydrograph.
由瞬时单位线推求S曲线和时段单位线，可以得到城市雨水口径流的流量过程线。
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Using plural matrix as basic programming unit, the MATLAB language has powerful numerical calculation function, graph expression function, and visible emulation environment.
Learning curve a graph showing the mathematical relationships between the quantity of firm's accumulative product and that of input to every unit of product.