polished rod meaning in English
光杆
Examples
- Servo - aligning sealer for polished rod at wellhead
抽油井口随动对中光杆密封器 - Field application of qbzc - 25 28 polish rod sealer
28光杆密封器的现场应用效果评价 - Design of the polished rod dropout braking system
抽油机光杆断脱抱死系统设计 - Development and application of polish rod vibration absorber
光杆减震器的研制与应用 - Effects of polished rod clamps on polished rod fatigue life
光杆卡对光杆疲劳寿命的影响