The small digital programmable exchange system studied in this paper is suitable for electric department.
本文研究的即为适用于电力部门的小型数字程控交换系统。
Fair exchange means that two parties exchange digital signatures fairly over Internet.
公平交换即允许双方在因特网上公平地交换数字签名。
Fair exchange means that two parties exchange digital signatures fairly over Internet.
公平交换即允许双方在因特网上公平地交换数字签名。
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