However, the spatial data model of main GIS systems only reflect knowledge of management and manipulation objects in field of cartography, such as point, line and poly geometry objects.
当今的GIS系统的空间数据模型，主要反映地图制图领域的点、线、面对象管理与操作的几何知识。
2
This detector line array is fabricated using 2 micron design rule and a double level poly silicon structure.
器件采用最小2微米设计规则，两层多晶硅结构。
3
The manufacturing line used for the production of amorphous silicon TFT displays is was shifted over to the production of low temperature poly-silicon TFT displays.