Oberflächenklassifizierung
Could you please provide the full title? The truncated "Oberflächenkla..." could refer to several topics. For example:
1) Oberflächenklasse — a term used in mathematics, geometry, or computer graphics describing a classification of surfaces
2) Oberflächenkalkulation — used in manufacturing or coating industries to estimate quantities and costs related to processing
If you specify which topic you want (or provide the exact full title), I will generate a