Then it summarized the work flow and working experience according to the application of DMC digital aerial photographs in Suzhou surveying and mapping project.

根据DMC数字航片在苏州测绘项目中的应用实践，总结了生产流程和工作经验。

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By introducing the surveying and mapping supervision system into engineering surveying and land investigation, it played the supervision role in the quality control of surveying and mapping project.

测绘监理制度引入及其在工程测绘、土地调查等项目的应用，对测绘项目质量起到监督作用。

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In construction of hydroelectric project, small range DTM data are often needed for topographic surveying, mapping, excavated form detection, earthwork calculation and so on.

水利水电工程施工过程中常常需要获得一些小范围的DTM数据，用于地形测绘、开挖形态监测及工程土石方量计算等。

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