Round steel link chains, tested - Part 4: Marking, test certificate.
经过检验的圆钢链。第4部分：作标记，试验证明书。
2
The core of this model is the recommendation-based trust model, organized as a trust delegation Tree (TDT), and the authorization delegation realized by delegation certificatechains.
这个模型的核心是基于推荐的信任模型，被组织成信任授权树(TDT)，并以证书链的形式进行授权。
3
In this thesis, some certificate graphs are used to denote the certificates and certificatechains.