The rate of power saving and payback period were calculated with the analytical method of month by month.

结合工程实例，采用逐月分析法对该技术实施后的节电率、回收期进行了计算。

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And calculated the rate of power saving and payback period after the technology being Carrie.

结合工程实例用逐月分析法对该技术实施后的节电率、回收期进行了计算。

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Non-discounting methods includes payback period and accounting rate of return.

非折现的方法有回收期法和会计收益率法。

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