数字图书馆对信息用户的电子商务模式主要有网上订购、付费浏览、网上赠予以及预付模式。
The E commerce models of digital library to information users include subscription based sales model, pay per view model, online compliment model and pre paid model.
数字图书馆对信息用户的电子商务模式主要有网上订购、付费浏览、网上赠予以及预付模式。
The E commerce models of digital library to information users include subscription based sales model, pay per view model, online compliment model and pre paid model.
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