The essential use case does not make these references.
基本用例不引用它们。
Comparing a system use case and an essential use case.
比较系统用例和基本用例。
The system use case has more steps than the essential use case.
系统用例的步骤比基本用例的步骤多。
To solve the above problems, this paper puts forward essential use case analysis technology.
本文提出了一种本质用况分析技术，它很好地解决了上述问题。
To solve the above problems, this paper puts forward essential use case analysis technology.
本文提出了一种本质用况分析技术，它很好地解决了上述问题。
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