The key technology of VPDN is tunneling technology, which usually refers to Layer2Tunneling Protocol (L2TP).
实现VPDN主要使用的是隧道技术，目前常用的是第二层隧道协议（L2TP）。
MVPN is built upon a new IP tunneling technology that USES multicast group addresses as tunnel destination addresses.
MVPN是以新的IP隧道技术为基础构建起来的，该技术将组播组地址用作隧道目的地址。
VPN network building is the tunneling technology based processs of building the exclusive and secure virtual private network.
VPN具有组网和安全两大功能，VPN组网是基于隧道技术为用户构建安全、独占的虚拟专用网络的过程。
At present, shallow shield tunneling technology has been very mature, but very few specific study was conducted on deep tunnel shield tunneling technology.
目前浅埋盾构隧道技术己相当成熟，深埋隧洞盾构技术的专项研究很少。
Introducing present situation of Chinese comprehensive mechanization tunneling technology, the difference between domestic and foreign technology is indicated in the paper.
介绍我国综合机械化隧道掘进技术概况，指出国内外技术水平的差距，提出将此项先进技术向各类工程隧道推广应用的建议。
This paper detailed introduces some concrete methods in allusion to different instance in transition period, including dual protocol stacks, tunneling technology and protocol translation.
本文详细介绍了针对过渡期不同问题的具体解决方案，包括双协议栈、隧道技术和协议翻译机制。
With the development of tunneling technology and the increase of transportation volume, in the tunnel the vehicles are discharging more and more heat nowadays, which will cause the temperature rise.
隧道的长度不断加大，交通量逐年增长，机动车排出大量的热量，这些热量的积聚会造成隧道内纵向温度升高。
It is very important for safely tunneling of roadway to apply advanced forecasting technology.
巷道超前探测、超前预报对于煤矿的安全掘进有着非常重要的作用。
The development of photon scanning tunneling microscopy and the microscopical imaging technology of samples.
光子扫描隧道显微镜的研制与样品显微成像技术。
The tunneling monitoring measurment and information feedback technology is one of the major content to construct tunnels using the principle of the new Austrain tunneling method (NATM).
隧道监控量测及信息反馈技术是新奥法（NATM）原理修建隧道的主要内容之一。
To avoid water bursting, this paper introduces the technology of grouting in high-pressure water-bearing stratum, which provides feasible experience for tunneling security.
主要介绍了对高压含水层的注浆堵水工艺，为巷道的安全掘进、防止巷道突水提供了可行的借鉴经验。
This curriculum system introduced the bridge and the tunneling structural testing goal, the classification, the principle and the method, the application and the lossless examination technology.
本课程系统介绍了桥梁与隧道工程结构试验的目的、分类、原理及方法、应用及无损检测技术。
The structure, fabrication technology and light emission properties of double barrier MIMIS tunneling junction are discussed.
讨论了硅基双势垒金属绝缘层金属绝缘层半导体 （MIMIS）隧道发光结的结构、制备方法及发光特性。
The structure, fabrication technology and light emission properties of double barrier MIMIS tunneling junction are discussed.
讨论了硅基双势垒金属绝缘层金属绝缘层半导体 （MIMIS）隧道发光结的结构、制备方法及发光特性。
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