国家介绍文章 Country List
作为一个介绍文章 As An Introducing Essay
评价和介绍书籍的文章 book review
媒体对成果文章介绍 Media with Introduction of achievements
文章先对网络安全现状作一介绍，然后阐述网络面临的四种主要安全性威胁，并针对网络安全性提出了相应措施。
This paper presents the current situation of network security, then raises four types of security threats on network, finally, the author sets forth some measures to solve network security.
文章绍了用于机械钻机井架起升过程中的一种新型起升装置。
The paper describes a new kind of raising assembly for mechanical drilling rigs.
文章主要对华东师范大学文学院大跨度连廊中应用现浇混凝土空心楼盖及滑动支座设计等作一介绍。
The application of cast-in-situ hollow concrete floor system in the large span gallery of the Literature Institute of East China Normal University and the design of the slip bracket are introduced.
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