单词 | nadir point |
释义 | nadir pointnadir pointnadir pointnadir point[′nā·dər ‚pȯint]nadir point![]() ii. As it relates to aerial photogrammetry, it is the point where a plumb line dropped from the front nodal point pierces the photograph. This point is vertically beneath the exposure station. In the illustration, it is point N. Also called a photo nadir and a photo plumb point. |
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