The stem of the original Charnley component was about 13 cm long. This was long enough to obtain secure fixation in the metaphysis and proximal diaphysis of the femur.

最初一级毛片视频在线看，Charnley型假體柄長(zhǎng)約13cm，該長(zhǎng)度足以使之在股骨干骺端及近端骨干內(nèi)達(dá)到可靠的固定。

This differential method is used to secure a stable operation and also to facilitate the tuning of the control functions.

這種差分的方法用來確保操作的穩(wěn)定并方便控制功能的調(diào)試。

In this paper, the concept of network security and security structures of OSI and Internet is introduced, and various threats confronting the computer network are also discussed. Several kinds of network information security technologies, including firewall technology, virtual private network, intrusion detection system, data encryption technology, identity authentication and security protocol etc. are also examined. The security of internal network is the biggest problem in the construction of each network. The solution to this problem lies in setting up a firewall. The theory of a firewall and the approach to its actualization is studied. Intrusion detection system, an important part of the computer network security system, has gained extensive attention. IDS monitors the computer and network traffic for intrusion and suspicious activities. It not only detects the intrusion from the extranet hacker, but also the intranet users. The emergence of virtual private network paves the way for realizing secure connection of LAN quickly and at a relatively low cost. The concept, function, key techniques, including the tunnel technology, and the ways to realize VPN are expounded in this paper. Also introduced is the data encrypt network technology, which is called the soul of computer network security, such as digital digest, digital signature, digital certificate, digital encrypt arithmetic and so on. At the same time, the principle and the process of implementing network security by digital certificate and digital signature, the basic principle and characters of security protocols, and finally, three of the security protocols, concerning the security problems in network, IPsec, SLL and SET are analyzed in detail Computer network system should be a system of dynamic defence, both dynamic and static, passive as well as active, and even offensive, combined with management and technology.

本文系統(tǒng)地介紹了網(wǎng)絡(luò)安全的概念色色网大全、OSI及Internet的安全體系結(jié)構(gòu)，并討論了計(jì)算機(jī)網(wǎng)絡(luò)面臨的各種安全威脅；內(nèi)部網(wǎng)絡(luò)的安全問題是每個(gè)建網(wǎng)單位面臨的最大問題国内自拍日韩高清视频在线，可以認(rèn)為防火墻技術(shù)是解決網(wǎng)絡(luò)安全的一個(gè)主要手段在那里可以免费看啪啪，本文研究了防火墻的原理及其實(shí)現(xiàn)手段；作為一種主動(dòng)的防御措施9999热，入侵檢測(cè)系統(tǒng)作為網(wǎng)絡(luò)系統(tǒng)安全的重要組成部分，得到了廣泛的重視五月丁香综合在线视频，TDS對(duì)計(jì)算機(jī)和網(wǎng)絡(luò)資源上的惡意使用行為進(jìn)行識(shí)別和響應(yīng)日韩伦理片精品视频网站免费，不僅檢測(cè)來自外部的入侵行為，也監(jiān)督內(nèi)部用戶的未授權(quán)活動(dòng)黄色视频在线免费看链接；虛擬專用網(wǎng)技術(shù)的出現(xiàn)免费日本黄色，為實(shí)現(xiàn)網(wǎng)絡(luò)間的連接提供了快速安全但又相對(duì)便宜的手段，本文較深入的探討了實(shí)現(xiàn)VPN的隧道技術(shù)黄色网站三国产，并對(duì)VPN的概念欧美久久性爱小视频、功能、實(shí)現(xiàn)途徑在线观看国产更新视频播放器、基本構(gòu)成亚洲图片无码一区二区最新、關(guān)鍵技術(shù)及發(fā)展前景等問題進(jìn)行了全面論述；數(shù)據(jù)加密技術(shù)是網(wǎng)絡(luò)安全核心技術(shù)之一黄片少妇，本文從數(shù)據(jù)加密算法按摩深夜A级毛片视频免费、數(shù)字摘要、數(shù)字簽名及數(shù)字證書等幾方面簡(jiǎn)要介紹了數(shù)據(jù)加密技術(shù)尹人影视，并分析用數(shù)字證書和數(shù)字簽名實(shí)現(xiàn)網(wǎng)絡(luò)安全的原理和過程黄色丝袜a片；對(duì)安全協(xié)議的基本原理、主要特點(diǎn)進(jìn)行了較為深入的研究久东京热，并就網(wǎng)絡(luò)的安全性問題剖析了三種安全協(xié)議：IPsec協(xié)議国产3p一区二区三区视频在线、SLL協(xié)議和SET協(xié)議。

Chapter 3 dissertates the structure, trust model, security performance and development of PKI, then discusses the correlated technologies of PKI which includes message digest, digital signature, digital time stamp, digital certificate, SSL, SET and IPSec protocol.

首先分析了PKI的體系結(jié)構(gòu)亚日一级a、信任模型免费一级A毛片在线播放一级、安全性能和發(fā)展方向，然后討論了PKI的相關(guān)技術(shù)：包括消息摘要99国产精品自在自在久久，數(shù)字簽名日韩网站精品导航在线播放免费观看，數(shù)字時(shí)間戳，數(shù)字證書黄色网站久久久久，SSL協(xié)議中国特黄二区三区久久久久一级強奸毛片，安全電子交易(Secure Electronic Transaction，SET)協(xié)議免费-级无码婬片AAAA片，和Internet安全協(xié)議(Internet Protocol Securitywwwxx在线，IPSec)。

What is more, the use of digital technology makes the signal transmission to the electronic control system extremely secure.

此外，使用數(shù)字技術(shù)使得信號(hào)到電子控制系統(tǒng)的傳輸極為安全可靠精品阿v999视频在线观看。

And workers don't know whether their retirement will be dignified and secure.

和工人不知道他們的退休將是有尊嚴(yán)和安全A级免费黄片。

Be aware that many "diploma mill" schools make up their own accrediting agencies in order to trick students into feeling secure.

要注意，很多假文憑的學(xué)校為了欺騙學(xué)生得到他們的信任国产黄色网站播放，捏造自己是受認(rèn)證機(jī)構(gòu)認(rèn)可的亚洲精品国产精品999。

The diplomatic bag is an important means used by diplomatic missions to secure the freedom and confidentiality of diplomatic correspondence.

外交郵袋是保證外交機(jī)構(gòu)通信自由和通信安全的特殊的"郵袋"，具有可資識(shí)別的外部標(biāo)記在线播放欧洲免费人成视频，其構(gòu)成要件必須附合法律規(guī)定国产迷姦播放在线观看的，在運(yùn)送過程中不得被無權(quán)機(jī)關(guān)或人員開拆與扣留。

Network Security: This path is directed toward network professionals who design and implement Cisco Secure networks.

網(wǎng)絡(luò)安全：這條道路是針對(duì)網(wǎng)絡(luò)專業(yè)人員誰設(shè)計(jì)和實(shí)施思科安全網(wǎng)絡(luò)亚洲无码国产操逼视频91。

Your Mission is to secure the area and disarm the explosives.

你的任務(wù)是保證這個(gè)地區(qū)的安全并拆除炸彈黄色长成年视频在线看。