如果数据包被丢弃确实意味着交换机过载，我们能否在无线网络中也这样推断呢？
If pakcets are being dropped does that mean a switch is overburdened, like we can infer on a wired network?
目前各大高校使用的实验性质的无线网络，OpenFlow允许在无线网络和有线网络之间交换。
Currently in use by universities running experimental wireless networks, OpenFlow allows handoffs across radios and networks.
正如本期特别报道中提到的那样，由于传感器、泛在无线网络以及精确分析软件的广泛应用，现实世界和虚拟世界正日益趋同。
As our special report in this issue explains, the physical and the virtual worlds are converging, thanks to the proliferation of sensors, ubiquitous wireless networks and clever analytics software.
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