With the assumption that the sites of fracture nucleation are randomly distributed in the sample,we deduce out a set of enclosed equations for predicting the fragment number and size distribution.

• 同时，假设断裂成核点随机分布于样品中，依据统计原理导出了一组完备的方程组，由此从理论上给出了碎片的数目及其大小分布关系式。