模型
V-model
中文定义
一种顺序开发生存周期模型，描述了软件从业务需求规格说明到交付 的软件开发的主要阶段与从验收测试到组件测试的相应测试级别之间 的一对一关系。
English Definition
A sequential software development lifecycle model describing a one- for-one relationship between major phases of software development from business requirements specification to delivery, and corresponding test levels from acceptance testing to component testing. V-