frontier defence

This paper discusses the spatial mathematical framework, spatial and non-spatial database organization and data models for 4D data integration. It also discusses the possibility and feasibility of 3G technologies integration. Lastly, it introduces the application of these topics to the Yunnan frontier defence information system.

讨论了4D集成的空间数学框架、空间与非空间数据库组织方式、数据模型设计以及3G技术结合的可能性与可行性，并介绍了其在云南边防信息系统中的集成及应用情况。

Strengthen construction of highway of main way and key zone national defense, frontier defence.

加强主要方向和重点地区国防、边防公路建设。

Tens of thousands of families were migrated to Hetao subsequently, which played a positive role in land reclamation and frontier defence.

接着，秦又徙民几万家于河套。这对于边地的开垦和边防的加强起到了积极作用。

Our frontier guards, fighting in self-defence , threw back the invading troops.

我边防战士在 自卫 战中打退了入侵的军队.

Epidemiological investigation of functional gastrointestinal disorders on soldiers at frontier defence in Sinkiang

驻疆边防官兵功能性胃肠疾病流行病学调查分析