off-line electronic cash payment system
off-line electronic cash payment system
离线电子现金支付系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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It is not only a method for research, but also a requirement to fulfill the extensive application of the off-line electronic cash payment system in our country.
这不仅是理论研究的需要，也是我国离线电子现金系统广泛应用的必经之路。
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