It describes the entities in the system and their relationship.
此模型描述系统中的实体及其关系。
In the software development community, it describes the security features of a system.
在软件开发团体中，它描述了系统的安全特性。
It describes the principle, system configuration and hardware design.
论述了它的工作原理、系统组成和硬件设计。
It describes the structure and of various function blocks in the system in detail.
详细描述了构成系统的各组成功能摸块的结构及功能特点。
Furthermore. it also describes its system architecture and the investigation and analysis of its potential market.
此外，文中还描述了FWA系统结构，并对其市场前景进行了调查和分析。
Then it describes some key technologies simply being used by the system.
然后对本系统使用的几项关键技术做了介绍；
It describes the unique advantage of the system in detail;
详细描述了系统独有的优点；
Finally, it describes the each step function of the system.
最后对各个系统功能的实现分别作了说明。
Finally, it describes the each step function of the system.
最后对各个系统功能的实现分别作了说明。
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