| • large diameter drilling | |
| दीर्घ: dolcho dolicho dolicho- elliptic spring | |
| व्यास: diameter dia | |
| प्रवेधन: boring boring head drill drilling | |
दीर्घ व्यास प्रवेधन अंग्रेज़ी में
[ dirgha vyas pravedhan ]
| • large diameter drilling | |
| दीर्घ: dolcho dolicho dolicho- elliptic spring | |
| व्यास: diameter dia | |
| प्रवेधन: boring boring head drill drilling | |
