通过在UML活动关系图中引入可变点，您可以对需求可变性建模。
You can model requirements variability by introducing variation points in your UML activity diagrams.
必须用共性和可变性分析对需求活动进行扩充。
Requirements activities must be augmented with commonality and variability analysis.
必须用共性和可变性分析对需求活动进行扩充。
Requirements activities must be augmented with commonality and variability analysis.
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