论文部分内容阅读
作法:将汇水面积F的4/5次方值,按一定的比例尺寸点绘汇水面积F尺。如F=0.01平方公里,则0.01~4/5=0.026,在F尺上0.026的长度,写上0.01,F=0.02平方公里,则0.02~4/5=0.046,在F尺上0.046的长度写0.02……如此点绘成F尺。取任一比例长度在适当的位置点绘ψ=0.1的流量尺,以各值的ψ,对ψ=0.l的比值长度,在ψ=0.1的流量Q尺下面点绘各种数值ψ的流量Q尺。令(h-Z)为一参数,点绘(h-Z)各值的斜线。如(h-Z)=30,则(h-Z)~3/2=165。任意取F尺上的值,
Approach: the catchment area F quadratic quadratic value, according to a certain percentage of the size of the catchment area F scale point. If F = 0.01 square kilometers, then 0.01 to 4/5 = 0.026, length 0.026 on F scale, write 0.01, F = 0.02 square kilometers, then 0.02 to 4/5 = 0.046, length on F scale 0.046 Write 0.02 ... so point painted F ruler. Take a proportional length of the flow in the appropriate location points ψ = 0.1, with the value of ψ, ψ = 0.l of the length of the ratio, ψ = 0.1 in the flow under the Q-point painted various values ψ Flow rate Q feet. Let (h-Z) be a parameter and point (h-Z) the diagonal of each value. If (h-Z) = 30, then (h-Z) ~ 3/2 = 165. Arbitrarily take the value of F feet,