Figure 9: the Use-Case Analysis model and its traceability links to the other model elements.

图9：用例分析模型，及其到其他模型元素的可追溯性链接。

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Figure 9: the Use-Case Analysis model and its traceability links to the other model elements.

图9：用例分析模型，及其到其他模型元素的可追溯性链接。

youdao