The construction phase is where the software is brought from an executable architectural baseline to the point at which it is ready to be transitioned to the user community , and in the transition phase , the software is fully system tested and turned over to the user community 在建立阶段,软体从一个可执行的结构基线发展到可以被交付到用户团体。在产品化阶段,软体被整体系统测试,并交付到用户。