These two models were used jointly to obtain some metricable characteristics of the process, including information on organization of standard software process, such as software scope, labor consumption and cost estimation . the aim of this combination is not only to perform statistics and metric after the process, but also to do estimation analyses when the program was established . thus, management and control of the process can be achieved 在获取过程的一些可度量特征,如与组织标准软件过程的使用有关的信息:软件规模、工作量、成本的估计值时,考虑将这两种模型结合使用,从而真正达到管理和控制的目的,不仅在事后进行统计和度量,而且在制定计划时对要度量的软件进行预估分析,有利于软件过程评估;3