当详细设计进行到一定阶段，最根本的详细设计已经完成时，就要基于项目的明确范围进行详细估算。

When the detailed design has progressed to a point when the essential details are known, a detailed estimate is made on the basis of the well defined scope of the project.

youdao

当详细设计进行到一定阶段，最根本的详细设计已经完成时，就要基于项目的明确范围进行详细估算。

When the detailed design has progressed to a point when the essential details are known, a detailed estimate is made on the basis of the well defined scope of the project.

youdao