The setting of GIS core curricula is one of the key questions which confronted with by GIS teaching reform.
地理信息系统专业核心课程设置是GIS专业教学改革面临的关键问题之一。
Digitizing the gas pipe network is the core to realize GIS software, it can be realized through the method of combine space data with attribution data of the gas facility and equipment.
数字化燃气管网是GIS软件实现的核心，本文通过燃气设施设备的空间数据和属性数据相结合的方法得以实现。
The correct and reliable data is the core of GIS.
正确可靠的数据是GIS系统的核心。
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