| 1. | Please measure drilling collar first , then drilling pipe
先量钻铤，再量钻杆。 |
| 2. | The feeling of hometown in xie zhangting ' s cixue
谢章铤词学中的乡邦情结 |
| 3. | Connect the feeling plate to the drill collars
用钻铤连接探深板。 |
| 4. | The systematic learning of xie zhang ting and his existent manuscripts
谢章铤的学术思想及传世稿本 |
| 5. | Have you measured those spiral collars and flex joints ? not yet
你量过那些螺旋钻铤和挠性短接吗？还没有。 |
| 6. | We need a short drill collar
需要一根短钻铤 |
| 7. | Spiral drill collars made in our plant are in accordance with api standard
本厂制造的螺旋钻铤按照“ api ”标准生产和验收。 |
| 8. | Rules for the inspection of drill collars and square and hexagon kellys for import and export
进出口石油钻铤方钻杆检验规程 |
| 9. | The drill collar is necessary of important drill tool for oil exploration . is main part that make up drill - stem
钻铤是石油钻采必须的重要钻具,是构成钻柱的重要部分。 |
