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Terms for subject Mechanics containing drill collar | all forms | exact matches only | in specified order only
| English | Chinese |
| drill collar stem | 钻铤柱 |
| lead drill collar | 导向钻铤 |
| Monel drill collars | 蒙乃尔钻铤 |
|
| English | Chinese |
| drill collar stem | 钻铤柱 |
| lead drill collar | 导向钻铤 |
| Monel drill collars | 蒙乃尔钻铤 |