The model divided GUI into four-layers: Windows framework layer, interface element layer, functional structure layer and running record layer.
模型将GUI分为窗口框架层、界面元素层、功能结构层和运行记录层四层。
They discussed an application structure with two layers: the bottom layer is made up of functional components, while the top consists of the flow logic of the application.
他们讨论了一个有两层的应用程序结构：底层由一些功能组件组成，上层则由应用程序的流逻辑组成。
Each asphalt layer assume different function, performance of the designed asphalt mixture should be adapted to their respective structure layer functional requirements.
各沥青结构层承担不同功能，设计的沥青混合料性能应适应各自结构层层位功能需要。
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