The traditional cumulant analysis is only suitable for single particle case,and existing numerical methods such as NNLS and CONTIN,etc,have poor accuracy when dealing with the multiple particle case.

• 传统的积累分析法只对单一颗粒分布适用,而对多颗粒分布的非负约束最小二乘法及CONTIN方法等计算精度又太差。