In system high-level design, MVC design pattern is applied to design the three-layer system architecture and the role and benefits of each layer are explained.
在系统概要设计中，以MVC设计模式为主导思想，设计出系统的三层体系结构，并详细介绍了各个层次的作用和优点。
The effects of the existing asphalt layer on the stress of UTW have been analyzed in elastic three layer system.
利用弹性三层体系，分析了沥青层对应力的影响规律。
The effects of the existing asphalt layer on the stress of UTW have been analyzed in elastic three layer system.
利用弹性三层体系，分析了沥青层对应力的影响规律。
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