Individual repositories can then exchange information via push and pull operations.
每个仓库都能通过推送(push)和拉取(pull)操作跟其他仓库交换信息。
A push transfers some local information to a remote repository, and a pull copies remote information to the local repository.
推送操作能将本地信息推送到一个远程的仓库，而操作能将远程仓库的信息复制到本地仓库。
It is a key problem for information service that researching of pull-push technology and obtaining information intelligently.
研究更为完善的推拉技术、更方便和智能的信息获取方式是图书馆信息服务中的重要课题。
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