large-scale topographic maps
城市大比例尺数字化地形测量研究 - xzbu.com 中国论文网 关键词：城市，大比例尺地形图，数字测图，GZCORS [gap=474]Keywords: urban, large-scale topographic maps, digital mapping, GZCOR
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In traditional reservoir capacity calculation, a planimeter is used to obtain a reservoir capacity from topographic maps and large scale topographic maps are needed if high accuracy is required.
传统的库容计算方法是在已有的地形图上采用求积仪法进行，当精度要求较高时，需到现场实测更大比例尺的地形图。
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