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                        <a class="title" href="/cloud/2014/02/17/%e8%bf%91%e6%9c%9f%e4%ba%91%e8%ae%a1%e7%ae%97%e6%8a%80%e6%9c%af%e7%9a%84%e5%8f%91%e5%b1%95%e4%b8%8e%e7%83%ad%e7%82%b9%e6%8a%80%e6%9c%af/index.html">近期云计算技术的发展与热点技术</a>
                        
                        
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                        <a class="title" href="/zhihu/2013/11/29/cc-mm-cn/index.html">[知乎回答] 通讯公司(运营商)无法确切的区分某个手机号的通话状态么？关机，没信号，正在通话中或者正在呼叫其他用户？</a>
                        
                        <section class="preview content"><p>这实际是两个问题，是否关机、有没有信号，是一部终端的状态问题，这个属于移动性管理的内容；而通话状态如何，是两部终端的关系问题，属于呼叫控制</p>
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                            <a class="name" href="/about.me.html">gnawux</a>
                            
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                        <a class="title" href="/zhihu/2013/11/16/debian/index.html">[知乎回答] 为什么 Debian 在国内的人气远不如国外？</a>
                        
                        <section class="preview content"><p>作为历史最悠久的主要 distro 之一，作为历史最悠久的 Linux distro 社区，Debian 的延续性还是很不错，我个人不认为这有严重问题，没必要要求大家都用 debian，各有各的好处</p>
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                        <a class="title" href="/zhihu/2013/08/29/smart-antenna/index.html">[知乎回答] 智能天线技术是一个好技术吗，具不具备实用性？</a>
                        
                        <section class="preview content"><p>智能天线又叫自适应天线阵列（AAA），利用数字信号处理技术，将多根天线接收到的信号进行处理，从而形成定向性很强的所谓波束，区分不同位置的终端，降低其他位置的终端的干扰。这个技术实际上在军事/雷达技术中，很早就采用了，就是所谓的相控阵雷达，嗯，宙斯盾听说过吧，就是类似的技术</p>
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                        <a class="title" href="/zhihu/2013/08/28/cell/index.html">[知乎回答] 手机是如何从与基站的信号交换中识别自身是否正在被呼叫的？</a>
                        
                        <section class="preview content"><p>一个基站可以支持很多信道，但大体上说，分为公共信道和专用信道两类，所谓公共信道就是大家共用的，专用信道就是专门给你打电话或者传数据的</p>
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                        <a class="title" href="/zhihu/2013/08/21/metro-safety/index.html">[知乎回答] 地铁到底是怎么供电的？无意中掉到站台下，应该怎么避免触电？</a>
                        
                        <section class="preview content"><p>地铁的供电方式主要有触网供电和三轨供电两种，触网供电时，是靠列车上方的电弓和触网接触供电的，这种方式跌落轨行区也不可能触电；另一种方式是三轨方式，是由列车行走的铁轨（行走轨）之外的，位于侧面，离地面有一定距离的第三轨来供电的，列车上的受流器和三轨的上表面或下表面接触供电，如果接触第三轨可能导致触电</p>
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                            <span class="date" data-time="1404259688"><span class="from"></span> 更新</span>
                            
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                        <a class="title" href="/linux/2013/06/01/%e5%9c%a8%e6%96%b0-thinkpad-s3-%e4%b8%8a%e4%bd%bf%e7%94%a8-bcache-%e4%bd%9c%e4%b8%ba-linux-%e7%9a%84%e6%a0%b9%e5%88%86%e5%8c%ba/index.html">在新 Thinkpad S3 上使用 bcache 作为 Linux 的根分区</a>
                        
                        
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