This text introduce the working principle, structure and technicality features of one-phase full -electronic pre-payment brain card meter, analysised its economic benefits through use it.

介绍了全电子式智能卡预付费电度表的工作原理、结构及技术特性， 通过实例分析了使用它所带来的经济效益。

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This paper introduces the working principle, functional features, electricity vending system and comprehensive benefit analysis of full-electronic pre-payment mag card meter.

介绍了全电子式预付费磁卡电度表的工作原理、功能特点、售电系统及其综合效益。

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The structure of the charges can vary depending on payment method (by direct debit, pre-payment meter, or credit transfer such as cheque), on whether it is an internet-only tariff, which part of the country the customer lives in, if the deal involves a fixed price, when the deal was launched, how long it lasts, and so on.

BBC: Ed Davey announces 'four core tariff' plan