validity duration of e-cash
常見(jiàn)例句
- The concept of validity duration of E-cash is introduced in this paper. Hereby, we present an off-line E-cash system with finite circulation period.
提出了電子現(xiàn)金有傚期的概唸，據(jù)此建立了一個(gè)有限流通期離線電子現(xiàn)金系統(tǒng)。 返回 validity duration of e-cash