通过公式SW=（C/Crand）/（L/Lrand）求取复杂网络的小世界性系数。 注：其中聚类系数和平均距离都是直接调用工具包中的函数。-By the formula SW = (C/Crand)/(L/Lrand) to strike a small complex networks worldwide coefficients. Note: where clustering coefficient and average distance are called directly tool