The data map is stored according to sheet or block in embedded GIS system, thus causing seam in the cutting-border for physical integrate area feature.
嵌入式GIS地图数据是分幅、分块记录和存储的，物理完整的面状地理实体在切割边界会产生缝隙。
2
The said connecting part connects with front side member and rear side member separately to make the composed box bordersheet capable of folding in side direction.