The design method in detail: the smallest wide and the biggest wide, the average slubby length, slubby lenSth disperse which means the valve of smallest/theaverage, themostisnotover0.

• 具体设定方法为:最小粗度和最大粗度；平均竹节长度；节长离散度意思是用最小值/平均值；最大不超过0.；9。