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https://learn.plus/2015/11/05/%e7%84%a1%e7%b7%9a%e7%b6%b2%e7%b5%a1%e4%bd%88%e7%bd%ae%e7%9a%84%e5%bf%83%e5%be%97%e4%b8%8a/
無線網絡佈置的心得(上)