The 3d images from LRO orbital photography are being used to make an exact digital topographic map of the moon, and this is fact may tweak the mean elevation value.
LRO轨道摄影机拍摄的3d图像被用作制作月球精确数字地形图，而这可能会调整平均高度值。
This paper discusses the method of digital mapping in surveying and mapping of topographic map by employing an actual example.
通过工程实例介绍了数字化成图技术在水库库区地形图测绘中的应用。
The water levels and water volumes of the lake in different periods were calculated by using a digital elevation model created by the topographic map.
利用数字高程模型求取易贡湖各时相的水位与水量；
This paper discusses the method of digital mapping in surveying and mapping of topographic map by an actual example.
通过工程实例介绍了数字化成图技术在水库库区地形图测绘中的应用。
This paper discusses the method of digital mapping in surveying and mapping of topographic map by an actual example.
通过工程实例介绍了数字化成图技术在水库库区地形图测绘中的应用。
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