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文章介绍了电话计费器的检定原理和两种检定方法 ,分析了《JJG10 7-95检定规程》的不足 ,解决了投币电话、IC卡、磁卡电话的检定。
This paper introduces the verification principle and two verification methods of telephone meter, analyzes the shortcomings of “JJG10 7-95 verification procedure”, and resolves the verification of coin-operated telephone, IC card and magnetic-card telephone.