UV$2$ - translation to french
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Online Dictionary

UV$2$ - translation to french

THE PROCESS OF PROJECTING A 2D IMAGE TO A 3D MODEL'S SURFACE FOR TEXTURE MAPPING
Uv mapping; UV coordinates; UV map; Uv coordinates; UV Mapping; UV Map; UV sphere; UV unwrapping tools; UV unwrapping
  • UV checker map with coordinates

UV      
ultraviolet, UV, beyond the rays of the violet end of the visible light spectrum, of or pertaining to ultraviolet light

Definition

secondly
You say secondly when you want to make a second point or give a second reason for something.
You need, firstly, a strong independent board of directors and secondly, an experienced and dedicated staff.
ADV: ADV with cl (not last in cl)

Wikipedia

UV mapping

UV mapping is the 3D modeling process of projecting a 3D model's surface to a 2D image for texture mapping. The letters "U" and "V" denote the axes of the 2D texture because "X", "Y", and "Z" are already used to denote the axes of the 3D object in model space, while "W" (in addition to XYZ) is used in calculating quaternion rotations, a common operation in computer graphics.