To sum up, based on the business needs analysis, this paper designed and implemented the real-time power charging system with J2EE.

综上所述，我们在分析业务需求的基础上，设计并实现了基于J2EE的电力实时收费系统。

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Calculation examples as used in power system show that this method simple and reliable, meeting the actual needs for analysis and calculation.

通过系统中的算例表明，该方法简捷、可靠，能够满足实际分析计算需要。

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