| • long hole drilling | |
| दीर्घ: dolcho dolicho dolicho- elliptic spring | |
| छिद्र: aperture cell pore valve hiatus slot mesh | |
| प्रवेधन: boring boring head drill drilling | |
दीर्घ छिद्र प्रवेधन अंग्रेज़ी में
[ dirgha chidra pravedhan ]
| • long hole drilling | |
| दीर्घ: dolcho dolicho dolicho- elliptic spring | |
| छिद्र: aperture cell pore valve hiatus slot mesh | |
| प्रवेधन: boring boring head drill drilling | |
