definition phase

基本解释

Three or four months should be enough for the project definition phase.
三到四个月对于项目定义阶段应该足够了。
Since development is an iterative process, requirements definition does not end in the initial project-definition phase.
由于开发是个迭代的过程，所以需求定义并没有终止在初始的项目定义阶段。
Before the IBM Business Consulting Services team arrived, the agency's development team had created a database schema during the requirements definition phase.
在IBM商业咨询服务团对到来之前，州政府机构的开发团队在需求定义阶段已经创建数据库模式。

The completion of the so-called System Requirements Review and System Definition Review allows program managers to proceed into the rocket's preliminary design phase, NASA officials said.
MSN: Giant deep-space rocket passes key test - Technology & science - Space - Space.com NBC News