The digital library information service modes are the combination of the digital library information service system essential factors.
数字图书馆信息服务模式是数字图书馆信息服务系统的各组成要素之间相互关系的组合；
It can provide total security service to the information system of client by digital certificate issued by ca authentication center.
通过CA认证中心发行的电子证书可以为用户提供信息安全的全面服务。
Is a work mode that digital library information service system develops information service activity.
是数字图书馆信息服务系统开展信息服务活动的工作模式。
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