合作虚拟参考服务是图书馆通过网络为用户提供不受地区、时间限制的专业咨询服务。

Collaborative virtual reference service could provide the professional reference service to users anywhere anytime through an international network of libraries.

youdao

合作虚拟参考服务是图书馆通过网络为用户提供不受地区、时间限制的专业咨询服务。

Collaborative virtual reference service could provide the professional reference service to users anywhere anytime through an international network of libraries.

youdao