研究了带移民分枝粒子系统的结构，证明了伴随带移民分枝粒子系统所对应的伴随卷积半群可以由分枝粒子系统的无穷可分概率进入律来刻画；
Two results are given . One is that every associated convolution semigroup can be determined by an infinitely divisible probability entrance law of the branching particle systems ;
无穷可分律