The application domain of a software system is the type of tasks for which the system is used or intended to be used.
软件系统的应用程序域是一种任务类型，人们针对该任务类型来使用或者计划使用此软件系统。
UML models hide technical implementation details, so that a system can be designed using concepts from the application domain.
UML 模型隐藏了技术实现细节，这样可以利用来自应用领域的概念来设计系统。
Figure 1: Applying the principles of high cohesion and low coupling is especially critical within the application and domain layers of an enterprise system architecture.
图1：应用高内聚和低耦合的原则在企业系统架构的应用和领域层中是特别至关重要的。
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