A good use case closes the loop between business requirement gathering, software construction, and acceptance testing.
好的用例完成业务需求收集、软件构造和验收测试之间的循环。
Delays getting client to sign-off on acceptance tests – this is true not only for sign-off but also getting client time for resolving requirement issues, give feedback on demos etc.
客户签收验收测试时的延迟——不仅在这方面，还包括让客户解决需求问题、提供演示反馈等方面。
Where the customer provides no documented statement of requirement, the customer requirements shall be confirmed by the organization before acceptance.
若顾客提供的要求没有形成文件，组织在接受顾客要求前应对顾客要求进行确认。
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