摘要
本文提出：统筹时间X服从参数为p．q，r的理想分布β（cm，x）．它较之文献[1],[2]所给分布有精确度高且计算简明的优点．
The essay points out that unified planning time X has the ideal dis－trlbuTion 3(cm,X)with the parameters p,q and r. Compared with that in referrences [1]and [2]. It is of the advan－tages such as higher in precision and more simple in calculation.
