Since last 90s, our country began to research and develop the digital image map cartography technology, which is applied in mapping, land, agriculture, ocean, etc more or less.
上世纪九十年代以来，我国也相继开展了数字影像地图制图技术研究开发工作，在测绘、土地、林业、农业、海洋等部门和行业都有不同程度的应用。
People always want to solve the problem of map automatic generalization since computer technology was applied in cartography. Until the 21st century, there is not a perfect method to solve it.
自从计算机技术应用于地图制图学领域的第一天起，地图自动综合就成为人们一直想要解决的问题，直到21世纪的今天，仍没能找到一个万全之策来解决这一国际性难题。
People always want to solve the problem of map automatic generalization since computer technology was applied in cartography. Until the 21st century, there is not a perfect method to solve it.
自从计算机技术应用于地图制图学领域的第一天起，地图自动综合就成为人们一直想要解决的问题，直到21世纪的今天，仍没能找到一个万全之策来解决这一国际性难题。
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