A project manager may use essential use cases to determine how many iterations will be required.

项目经理可以使用基本的使用用例来确定需要多少次迭代。

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Essential use cases are abstract, lightweight, technology-free dialogues between user and system.

本质用例描述了用户与系统间抽象、轻量级和技术无关的对话过程。

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The essential criterion for deciding whether to break use cases apart is whether their goals are different.

决定是否分隔用例的本质标准是他们的目标是否不同。

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The two bodies have taken the unusual step of releasing a joint policy statement on standards-essential patents (SEP) as their use in smartphone and tablet court cases, usually to shoo away Apple, has increased.

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