Because system behavior is the result of objects sending messages to each other, sequence diagrams plot the course of those messages as they move from object to object.
因为系统行为是对象相互之间发送消息的结果，因此序列图绘制了那些消息在对象之间移动时的路线。
In addition to their use in designing new systems, sequence diagrams can be used to document how objects in an existing (call it "legacy") system currently interact.
序列图除了在设计新系统方面的用途外，它们还能用来记录一个存在系统(称它为“遗产”)的对象现在如何交互。
An organization's technical staff can find sequence diagrams useful in documenting how a future system should behave.
组织的技术人员能发现，序列图在记录一个未来系统的行为应该如何表现中，非常有用。
For example, a system designer is interested in the logical and physical aspects of a system, so the most useful forms are class and sequence diagrams rather than use-case and activity diagrams.
例如，系统设计人员对系统的逻辑和物理方面感兴趣，因此最有用的形式就是类和序列关系图，而不是用例和活动关系图。
Sequence diagrams can also be used to model other system activities, such as usage scenarios or additional application services (web services, business transactions).
时序图也可以用来建模其他系统的行为，比如使用情景或者附加应用服务(网络服务，商业交易)。
Sequence diagrams model the flow of logic within your system in a visual manner, enabling you to both document and validate your logic, and are commonly used for both analysis and design purposes.
序列图以可视方式为系统中逻辑的流程建模，能够让您记载和验证逻辑，这通常用于分析和设计目的。
You capture this information using sequence diagrams that focus on operational nodes (actors) interacting with the subject system via messages.
您可以利用着重于运作节点(参与者)通过消息与主题系统交互的序列图来获取该信息。
To combine the verification with system design, a prototype of automatic verification tool for UML sequence diagrams has been designed and developed.
我们将验证工作与系统设计结合起来，设计和开发了针对UML顺序图的自动验证工具原型。
UML sequence diagrams reflect the interaction and sequence of messages among concurrent objects in the system, and hold the important position in software modeling.
UML顺序图反映了系统中并发对象之间的消息交互及顺序，在软件建模中占有重要地位。
The system requirements and design models are defined by UML diagrams such as Use Case diagram, Class diagram, Sequence diagram, Collaboration diagram, Component diagram, and Deployment diagram.
利用UML的用例图、类图、时序图、合作图、组件图和部署图等，定义系统需求，描述系统设计。
Model the user requirements and architecture of your software system by drawing the following UML diagrams: activity, component, class, sequence, and use case.
绘制下列U ml图表，为使用者需求和软体系统架构设定模型：活动、元件、类别、顺序和使用案例。
Define the architecture: Model the large-scale structure of the system and the design patterns by drawing UML component, class, and sequence diagrams.
定义体系结构：可以通过绘制UM l组件图、类图和序列图，对大型系统结构和设计模式进行建模。
Define the architecture: Model the large-scale structure of the system and the design patterns by drawing UML component, class, and sequence diagrams.
定义体系结构：可以通过绘制UM l组件图、类图和序列图，对大型系统结构和设计模式进行建模。
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