覆盖网可以看成是一个全连通虚拟网络，前提是底层物理网络不能分隔开。
An overlay network can be considered a fully connected virtual network as long as the underlying physical network does not partition.
其中的一个服务就是让建立一个虚拟的工作站，让那些有技术的工人的信息发布在智能手机上，甚至在没有手机网络的情况下也可以覆盖到。
One service lets craftsmen create a virtual job docket with a few texts or touches on a smartphone, even without mobile-network coverage.
研究如何在理想状态下使分布达到覆盖度最大化，同时采用虚拟势场方法使节点作扩散运动，以消除网络感知重叠区。
How to maximize the coverage in ideal state is studied. By using virtual potential field, nodes repel each other, which eliminates the sensing overlapping regions.
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