需求的可追溯性可以清楚地理解什么需要进行测试。
Traceability to requirements for clear understanding of what is being tested.
一个软件构架确定了主要的组件和它们之间的交互作用，两个组件之间的依赖性以及这些组件对于需求的可追溯性。
An architecture identifies the major components and their interactions, the dependencies between components, and traceability from these components to the requirements that they realize.
需求可追溯性是两个需求之间的关系，这两种需求代表了工件之间的源、衍生或者附件。
Requirements traceability is a relationship between two requirements that implies the source, derivation, or dependencies between the artifacts.
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