The method of setset of equation of network by current pattern and voltage pattern is presented.

讨论利用电流图和电压图列出网络的缩减改进节点方程组的方法,并举例说明.

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These changes challenge traditional content to shed a business directly, original current pattern will be pounded.

这些改变直接挑战传统的物流企业, 原有的流通模式将会受到冲击.

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