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。
It has been several years since we used computer technology in cartography making. Now producers use various softwares to make cartography, and this leads to different productive efficiency.
计算机技术应用于地图集的制作已有多年了，目前生产单位制作地图集时所使用的软件五花八门，由此而产生的生产效率也各不相同。
It has been several years since we used computer technology in cartography making. Now producers use various softwares to make cartography, and this leads to different productive efficiency.
计算机技术应用于地图集的制作已有多年了，目前生产单位制作地图集时所使用的软件五花八门，由此而产生的生产效率也各不相同。
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