讨论了数字制图几种数据采集方式的误差来源，并对这些误差进行了分析评价。
The error sources of some data acquisition methods are discussed in digital cartography, and these errors are analysed.
文摘：讨论了数字制图几种数据采集方式的误差来源，并对这些误差进行了分析评价。
Abstract: the error sources of some data acquisition methods are discussed in digital cartography, and these errors are analysed.
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