1.
Implementation of Layer 2 VPN in Radium 8750;
二层VPN在Radium8750中的实现
2.
Research and Implementation of L2 VPN Based on MPLS;
基于MPLS二层VPN技术的研究与实现
3.
Research on L2 and L3 VPN Based on MPLS
基于MPLS的二、三层VPN研究
4.
Research and Implement of Vpnwith Encrypted Transmission in Application Layer;
应用层加密传输VPN的研究与实现
5.
Research and Implementation of Application-layer VPN Secure System;
应用层VPN安全互联系统的研究与实现
6.
Research on VPN Application in Distributed Intrusion Detection System Based on Layer
VPN技术在基于分层的分布式入侵检测系统中的应用研究
7.
Research on IPSec VPN and SSL VPN
IPSec VPN与SSL VPN的研究
8.
Comparative Research of IPSec VPN and SSL VPN
IPSec VPN与SSL VPN的对比研究
9.
A Comparative Analysis of IPSec VPN and SSL VPN
IPSec VPN和SSL VPN的分析比较
10.
second order change
第二层次的变革 第二层次的变革
11.
an intermediate floor just above the ground floor.
指介于一层和二层之间的中层楼。
12.
Overall area 20,880 m2 including the basement storey 1 and 2 and above ground storey 1 and 2.
总面积为20,880平米，可分布在地下二层、地下一层、一层和二层。
13.
The Protocol Analysis and Research of IPSec VPN and SSL VPN;
IPSec VPN和SSL VPN的协议分析与研究
14.
The Research and Implementation of IPSec VPN and SSL VPN Based on IPv6;
IPv6下IPSec VPN与SSL VPN研究与实现
15.
No.3 upper tween-deck forepart
三舱上二层甲板前部
16.
No.3 upper tween-deck wings
三舱上二层甲板两侧
17.
outside monkey board
折叠式井架外侧二层台
18.
double stack container train
可载二层集装箱的火车