Virtual reference service usually adopts three models in digital library.

数字图书馆中虚拟参考咨询服务通常采用三种模式。

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Virtual reference service is the development direction of academic library.

虚拟参考服务是图书馆参考咨询工作的发展趋势。

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This paper also introduces the developing trend of virtual reference service.

文中还介绍了虚拟参考咨询服务的发展趋势。

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Developers will be able to leverage the reference designs to rapidly develop their own virtual assistant capabilities for travel, insurance, retail, government and more.

ENGADGET: Voice assistant 'Nina' lets any app obey commands, makes speech your password