| • grinding technique | |
| घर्षण: friction grinding grind abrasion polishing abrade | |
| तकनीक: technique technology science scissors techniques | |
घर्षण तकनीक अंग्रेज़ी में
[ gharsan takanik ]
| • grinding technique | |
| घर्षण: friction grinding grind abrasion polishing abrade | |
| तकनीक: technique technology science scissors techniques | |
