上一次对这些巨石的表面进行的测量工作是在1993年的时候，使用了摄影测量技术- - -通过这种技术可以把好多张照片合并起来- - -其极限分辨率可以达到2厘米。
A survey of these surfaces was last undertaken in 1993 using photogrammetry - a technique that combines overlapping images - to achieve a somewhat limited resolution of 2cm.
有些卫星能提供高分辨率的摄影。
There are satellites that supply high-resolution photography.
结果根据不同摄影参数下的空间分辨率分布情况，获取优化的CR下肢全长摄影的管电压和毫安量参数。
Results Optimal tube voltage and milliampere parameters of the full-length leg projection was acquired in terms of the distribution of spatial resolution under different parameters of exposure.
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