The main elements of the digital library system structure are digital target, handle and storage.

数字图书馆体系结构的主要构件是数字对象、句柄和仓储。

youdao

The main elements of the digital library system structure are digital target, handle and storage.

数字图书馆体系结构的主要构件是数字对象、句柄和仓储。

youdao