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该文介绍了CUSUM的绕计方法，它能将锅炉或工厂设备改造后引起的燃料耗量的变化直观地在图表中反映出来，由此可计算出改造而产生的经济效益。
This paper introduces the winding method of CUSUM, which can graphically reflect the changes of fuel consumption caused by the boiler or factory equipment reformation, so as to calculate the economic benefits of the revamping.