Sequence diagrams can be used to describe the USES of a class or interacting group of classes, thus describing the protocols required for interaction.

序列图可用于描述类或一组相互作用的类的使用，因而描述了交互所需的协议。

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Activity diagram: An activity diagram provides a view of the behavior of a system by describing the sequence of actions in a process.

活动图：活动图提供对系统行为的视图，它描述了过程中的活动序列。

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Within this framework, a configuration defines an application, describing the components of the application, as well as the sequence and method of their invocation.

在这个框架中，配置定义了一个应用程序，描述了该应用程序的组件以及它们调用的顺序和方法。

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What that means, in a stored-program computer, is that I can provide to the computer a sequence of instructions describing the process I want it to execute.

它的意思就是说，我可以给一个存储程序计算机,提供一系列,描述我希望,能执行的过程的指令。

麻省理工公开课 - 计算机科学及编程导论课程节选