| • rotary drilling | |
| घूर्णी: rote rotifer rotative rotaing rotary rotary | |
| प्रवेधन: boring boring head drill drilling | |
घूर्णी प्रवेधन अंग्रेज़ी में
[ ghurni pravedhan ]
| • rotary drilling | |
| घूर्णी: rote rotifer rotative rotaing rotary rotary | |
| प्रवेधन: boring boring head drill drilling | |
