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。
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.
当前，卫星摄影测量已经成为地形图测绘的主要手段之一。
Currently, satellite photogrammetry has been one of the mostly used methods of topographic mapping.
我国1：5万地形图是采用航空摄影的方法完成的。
The 1: 50000 maps are accomplished by means of aerophotogrammetry in China.
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