Through power flow calculation of tie lines, the effects of the changes in generation, load and network structure on the voltage quality and safe and economic operation of the system can be analyzed.

通过联络线的潮流计算，可以分析发电出力和负荷以及网络结构的改变对系统电压质量和安全经济运行的影响。

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The thesis sets up an indicators system on economic return evaluation of passenger train plan and discusses the calculation and relationships of these indicators.

本文对铁路旅客列车开行方案经济效益评价的指标体系及其计算表达式进行了研究。

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It establishes coordination analysis model between sub-system and internal system of ocean economic complex system with calculation method.

建立海洋经济复合系统子系统内部与子系统之间的协调度分析模型，并给出了协调度的计算方法。

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