在NGN网络体系分析基础上，基于综合成本概念建立网络拓扑优化模型，并提出了相应算法。
Topology optimization model based on the concept of TCO is derived from the structure analysis of NGN network, and correspondent algorithms are provided.
首先区分了氢源和氢阱的概念，然后通过氢源氢阱复合曲线和氢气剩余曲线在合成网络之前以图形的方式指出了最小氢气使用量。
Pinch technology is established on the concept of hydrogen sinks and hydrogen sources. Using the data of sinks and sources, hydrogen composite curves and hydrogen surplus curve are plotted.
首先区分了氢源和氢阱的概念，然后通过氢源氢阱复合曲线和氢气剩余曲线在合成网络之前以图形的方式指出了最小氢气使用量。
Pinch technology is established on the concept of hydrogen sinks and hydrogen sources. Using the data of sinks and sources, hydrogen composite curves and hydrogen surplus curve are plotted.
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