1.
mule-head hanger
驴头上挂抽油杆的装置
2.
double pin sucker rod
两头阳螺纹的抽油杆
3.
Study on the Dynamic Sealing Device of Pumping Units by Injecting Colloid;
抽油井动态注胶式光杆密封装置的研制
4.
Research on the Method and Apparatus of Alternating Magnetic Flux Leakage Testing for Sucker Rod
抽油杆交流漏磁检测方法与装置研究
5.
unit pumping outfit
单独驱动的抽油装置
6.
Optimum design for double-horse head beam pumping unit with rear horse head′s outline of spiral of Archimedes
阿基米德螺线双驴头抽油机优化设计
7.
level(l) ing box
悬挂装置斜拉杆调节器
8.
Design of the test device for the frictional abrasion of the sucker rod centralizer
往复式抽油杆扶正器摩擦磨损试验装置设计
9.
Compressing the spring rod, the linkage connected mechanically to the rod of the single-acting cylinder turns the fuel regulating shaft to the stop position.
压缩弹簧杆，联动装置机械连接到单作用汽缸的杆上转动燃油调节杆到停止位置。
10.
The Optimizing Design for the Structure of the Rear Horse-head of Special Beam Pumping Unit
异型游梁式抽油机后驴头结构优化设计
11.
Two-horse head beam pumping unit rod load and torque variation
双驴头游梁式抽油机悬点载荷及扭矩变化规律
12.
Research on Rod Load and Torque of Twin-horse Head Beam Pumping Unit
双驴头游梁式抽油机悬点载荷及扭矩研究
13.
central pumping power
联合抽油的中心动力装置
14.
Design of Energy Saving Controller for Beam-pumping Units;
游梁式抽油机节能装置控制器的设计
15.
Development and Application of φ89 mm Tubing Swabbing Device
φ89mm油管抽汲装置的研制与应用
16.
The cruel man was hitting the donkey.
那个残酷的人正在抽打那头驴。
17.
He gave the poor donkey a terrible lashing.
他狠命地抽打那头可怜的驴.
18.
A tripping or triggering device on a mechanism.
倾卸装置、钩杆机械装置上断开或启动的装置