Adopting the object-oriented design method, the detail design of some modules is given, which includes use case design, concept model and sequence diagram.
采用面向对象的设计方法，对部分模块给出了详细设计过程，包括用例设计、概念模型和顺序框图。
Use Case Design Step 3: Simplify sequence diagrams using subsystems (optional).
用例设计第3步：用子系统简化序列图(可选)。
In Part II of this series, we will perform the steps of RUP's Use Case Design activity.
在本系列的第二部分，我们要按步骤执行RUP中的用例设计活动。
The next Use Case Design step is to simplify repeated behavior by replacing common groupings of objects with a subsystem.
用例设计的下一步骤是用子系统替换公共组以简化重复行为。
The result of our activities in Use Case Design will produce the contents of the RUP Design Model, including (but certainly not limited to)
用例设计活动的结果将产生RUP设计模型的内容，包括（当然不止于此）
During business analysis, requirements gathering, and use-case design, the model deliberately lacks detail, showing only the information concepts that are most important for the business.
在业务分析、需求收集和用例设计期间，有意忽略模型的细节，只显示对业务最重要的信息概念。
A business or software system can be documented by writing single requirement statements, and these statements can be greatly expanded by applying the principles of use-case design.
一个商业或者软件系统可以通过逐一记录下需求陈述来备案，这些陈述也可以通过运用用例设计的原则得到极大的扩展。
Now we are at a point to turn our attention to Use-Case Design, which is the subject of Part 2 in this series.
下面我们的重点将会放到用例设计上面来，这就是本文第二部分的主题。
Now we are at a point to turn our attention to Use-Case Design, which is the subject of Part 2 in this series.
下面我们的重点将会放到用例设计上面来，这就是本文第二部分的主题。
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