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| نموذج رأسي رقمي ؛نموذج حسابي رقمي | |||
| Englisch Thesaurus | |||
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| The representation of terrain surface by continuous elevation values at all intersections of a defined grid, referenced to common datum. (Digital Terrain Model (DTM) is sometimes referred to as DEM.) | |||
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| DEM | |||
