这个符合级别严格以抽象对象作为资源的内容，但是支持可扩展类型和资源标识符的概念。
This conformance level deals strictly with abstract objects as the content of resources, but it does support the idea of extensible types and identifiers for resources.
最后得出基于分布式哈希表的结构化对等网络依据资源标识符进行查找，可扩展性和查找效率都很高。
At last, we give advantage and disadvantage respectively. structural P2P which based on DHTs search resource by resource id, expansibility and search efficiency is the best.
最后得出基于分布式哈希表的结构化对等网络依据资源标识符进行查找，可扩展性和查找效率都很高。
At last, we give advantage and disadvantage respectively. structural P2P which based on DHTs search resource by resource id, expansibility and search efficiency is the best.
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