Integrated Terrain Unit map (ITUM) with several overlays of land elements is being developed in the world. The ITUM is a new computermappingsystem.
具有几个土地要素层的综合土地单元制图在土地研究中正在获得日益广泛的应用,它是计算机制图的基础。
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After asking if a high-tech computermappingsystem could display the street in Liverpool, northwest England, where she grew up, Mrs Blair pointed to a nearby area.