Summary: as we determined last week, UML activity diagrams document the logic of a single operation or method, a single use case, or the flow of logic of a business process.

简介：正如我们上周已确定的那样，UML活动图记录单个操作或方法的逻辑、单个用例或商业过程的逻辑流程。

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To ensure the voltage quality and the economic operation a design method for planning reactive power compensation in UHV network with optimum reactive power flow is presented in this paper.

本文提出了用最优无功潮流法规划超高压电网感性无功功率补偿设计的方法，这是保证电网电压质量和经济运行的前提。

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Mechanism, process flow, sorting, operation method and its advantage and disadvantage of leachate refilling were explained. Study on influence of leachate refilling to landfill site was carried out.

阐述了渗滤液回灌的机理、工艺流程、分类、操作方法及其优缺点，并就渗滤液回灌对填埋场的影响进行了研究。

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