第二部分参考现有的磁卡机刷卡原理，制作了工程实用的磁卡及磁卡信号拾取装置。
The second part is to make references to the principle of the magnetic card reader existed, and to make the magnetic card and magnetic card detector, whichfocused on appliance in engineering fields.
第二部分参考现有的磁卡机刷卡原理，制作了工程实用的磁卡及磁卡信号拾取装置。
The second part is to make references to the principle of the magnetic card reader existed, and to make the magnetic card and magnetic card detector, whichfocused on appliance in engineering fields.
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