文章设计了一种基于双层混合式P 2 P模型的协同架构，结合了本地组的传送树结构和结构化骨干网结构。
This paper designs a P2P based hybrid collaborative model, which combines local delivery tree and structured backbone network.
通过梁架结构 可以实现组合式房屋上下两层的简便、稳定的结合。
Via the beam frame structure, the upper and lower layers of a combination house can be simply and stably combined.
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