Through the discussion of role partial ordered relation and administer field the usability and security of this design scheme are proved.
通过对角色偏序关系和角色管辖域的讨论，说明了该设计方案的可用性和安全性。
Through the discussion of role partial ordered relation and administer field the usability and security of this design scheme are proved.
通过对角色偏序关系和角色管辖域的讨论，说明了该设计方案的可用性和安全性。
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