通过对经纬仪测绘法1：50 0地形测图过程中各个工序的分析，得出了1：50 0地形图上的点位中误差。
Through the analysis on every procedure of surveying 1:500 topographic map with the method of transit mapping, the position error of 1:500 topographic map is got.
通过对经纬仪测绘法1：50 0地形测图过程中各个工序的分析，得出了1：50 0地形图上的点位中误差。
Through the analysis on every procedure of surveying 1:500 topographic map with the method of transit mapping, the position error of 1:500 topographic map is got.
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