1.
A Summary to Study and Designation of Mobile Agent Security Authentication;
基于PKI、X.509证书的移动代理安全认证研究
2.
The Design and Implementation of user authentication System based on digital certification;
基于数字证书X.509的身份认证系统的研究
3.
Research of Public Key Certificate Management System Based on X.509 Standard;
基于X.509标准的公钥证书管理系统研究
4.
Research of Grid Authentication Model Based on Kerberos and X.509;
基于Kerberos与X.509的网格认证模型研究
5.
Discussion on the Operational Principles of PKIX and Implementation of Elementary Certificate Function Module;
基于X.509标准的公共密钥基础设施工作原理探讨及简单证书功能模块实现
6.
Design and Implemention of Certificate Authority Based on the X.509 Criterion;
基于X.509标准的CA认证中心设计与实现
7.
The Research of X.509-based PKIX Series Standards;
基于X.509的PKIX系列标准研究
8.
Centralized RFID Public Service Infrastructure Based On X.509 Certificate System
基于X.509的集中式RFID公共服务体系
9.
Access Control Technology on Secure WEB Based on SSL Protocol and X.509;
基于SSL协议和X.509的安全WEB访问控制技术
10.
My room number is 509. Ha-ha!
房号是509。哈哈！
11.
A Solution to Two Symmetric Inequations of x~x and x~(x~2);
关于x~x和x~(x~2)的两个对称不等式的证明
12.
builder's certificate
建造证书建造厂证书
13.
certificate of approval
批准证明书,核准证明书
14.
The Methods to Prove the Inequality of (2x)/(π)＜sinx＜x, x∈(0,π/2);
关于不等式(2x)/π＜sinx＜x，x∈(0，π/2)的四种证法
15.
On the Proving of the Limit;
关于极限"非汉字符号"(1+x)~(1/x)=e的证明
16.
an application, a business licence, a credit certificate, a letter of attorney,
申请书、开业证书、资信证书、授权书，
17.
All certificates in the certification path, except for the root certificate
证书路径中的所有证书，除了根证书
18.
"All certificates in the certification path, including the root certificate
"证书路径中的所有证书，包括根证书