The whole structure of the system is three layer construction, the head connecting into layer, the center application layer and the database support layer of back-end.
系统的整体架构为三层结构，前端接入层、中间应用层和后端数据库支持层。
Development technique of application software based on three-layer structure was discussed.
探讨了基于三层结构的应用软件的开发技术。
Finally, the application of three-layer structure method in geoscience is discussed.
最后，对该三层结构方法在地学中的应用做出总结。
Analyzes the way to realize three - layer structure in Web application and their characteristics, proposing one kind of new Web application framework.
文中分析了Web应用三层架构的实现方式及其特点，提出了一种新的Web应用框架。
Analyzes the way to realize three - layer structure in Web application and their characteristics, proposing one kind of new Web application framework.
文中分析了Web应用三层架构的实现方式及其特点，提出了一种新的Web应用框架。
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