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????????й????й?????????????????????????????????IBM(178.97?? 1.66?? 0.94%)???????????й????????????????22%????????????????2014?????????????У???????й??г??????????18%??
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?????????????й?????????????????2011?????2012??????????й??г??????????????11%??17%????????????????????????????2013?????????й????????5%??
????“????”????????????????????????????????????????????????????????????μ?2014???????????????й????????????18%??????????????????г??????????????????9%??
????“??????????????????κ??????????????й??????????????????κμ??????????????????????????????й?????????????????????????????????????????”???????????塣
??????????????????尾?????????????“???????????й????????????????????????й??????????????????????——????????????????????й??????????????????????????????????????й?——??????????????????”
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???????????????????SDN???????????????????????????????????????????????????????????????????????????????????????(386.71?? 5.34?? 1.40%)?????(1063.11?? 4.70?? 0.44%)?????????????????ü??????′????硣
???????δ??????????????????????????????SDN?г??????????????е???????????——??????????430??????????220???????
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