In GIS geospatial data acquisition, there are many map scanning digitizing systems in which automatic tracking method is used for digitizing contour lines.是什么意思_In GIS geospatial data acquisition, there are many map scanning digitizing systems in which automatic tracking method is used for digitizing contour lines.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句