| 1. | The metering rod either has two or more steps of different diameters or is tapered at its lower end . 量油杆可以有两个或更多个不同直径的台阶,或在它的下端被逐渐削成锥形。 |
| 2. | Carbon fibre composite continuous sucker rod 碳纤维复合材料连续抽油杆 |
| 3. | Method for determining service deadline of sucker sods in use 在用抽油杆服役期限的确定方法 |
| 4. | A simulation demo system based on intelligent decision 玻璃钢混合抽油杆柱动特性的计算机模拟 |
| 5. | Discuss of contribution factors of sucker rod torsional vibration 抽油杆扭转振动形成因素浅析 |
| 6. | Air lift rod transfer elevator 气动抽油杆运移吊卡 |
| 7. | Specification for hollow sucker rod 空心抽油杆 |
| 8. | Effect of resistance in polymer flooding on sucker rob partial abrasion 聚合物采出液中的阻力对抽油杆管偏磨的影响 |
| 9. | Kipp vacuum sucker - vod erosionresistance nitrdize technics and its application 抽油杆脉冲真空抗蚀氮化工艺及其应用 |
| 10. | Supper - strength sucker rod 超高强度抽油杆 |