它可使光盘数据库充分发挥效能，使信息服务机构获取最大收益，还可避开基于广域网的光盘数据库信息服务中引起的版权之争。

The authors propose a kind of CD ROM database information services based on virtual networks and shared by telephone, fax and the Internet.

youdao

它可使光盘数据库充分发挥效能，使信息服务机构获取最大收益，还可避开基于广域网的光盘数据库信息服务中引起的版权之争。

The authors propose a kind of CD ROM database information services based on virtual networks and shared by telephone, fax and the Internet.

youdao