Based on an analysis on the variable flow operation regulation of heating systems, puts forward variable temperature difference control and control scheme.
在分析供热系统变流量运行调节的基础上，提出了变温差控制并给出了控制方案。
The result of program operation shows the calculating result satisfies the requirements of natural gas flow state and measurement error analysis to the system.
程序运行表明，计算结果满足该系统对天然气流动状态及计量误差分析的要求。
According to analysis of value flow, we put forward double-layer value flow model to integrated supply chain operation, which provides analytic tool to structural design of integrated supply chain.
通过价值流分析，提出了基于集成供应链运作的两层次价值流模型，为集成供应链的物理结构设计提供了分析工具。
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