1.
churn-type percussion drill
无游梁绳式顿钻钻机
2.
hand churn drill
手动钢绳冲击式钻机
3.
crank-guide blue elephant
曲柄连杆式无游梁抽油机
4.
Structure characteristics of foreign cantilever beams of the jack-up drilling platform
国外自升式悬臂梁钻井平台结构特点
5.
beam pumping well
游梁式抽油机抽油的井
6.
Example Analysis of the Method with Crane to Deal with the Very Large Bending Deformation of Bridge Crane s Button;
用钢丝绳解决桥式起重机大梁过大弯曲变形的实例分析
7.
Diamond core drilling equipment--Wire line system
GB/T16951-1997金刚石绳索取心钻探钻具设备
8.
Analysis of fatigue reliability of crank pin of beam pump unit.
游梁式抽油机曲柄销疲劳可靠性分析
9.
Research on Intelligent Control Device for Beam-pumping Unit;
游梁式抽油机的智能型节能系统研究
10.
Dynamic Analysis on Beam Pumping Unit Considering Firition;
考虑摩擦的游梁式抽油机动力学分析
11.
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
12.
Study on the Method of Dynamics Simulation for the Beam Pumping Unit
游梁式抽油机动力学仿真方法的研究
13.
Efficiency Analysis and Enhancement Countermeasures of the Beam Pumping System
游梁式抽油系统效率分析及提高对策
14.
Monitoring of Down-hole Working Conditions of Beam Pumping Unit
游梁式抽油机井下工况监测方法研究
15.
Development of the balance-type walking beam pumping unit and field test
天平式游梁抽油机的研制与现场试验
16.
An application of the AFE frequency converter to a beam type oil pumping set
AFE变频器在游梁式抽油机上的应用
17.
Neither the upper bend of the Don, nor the crucial land bridge, had been secured.
上游的顿河河曲和关系重大的陆口桥梁此时都未到手。
18.
Application of Supportless Supporting with Steel Hoops in the Bent Caps of Bridges
钢抱箍式无支架支撑法在桥梁盖梁中的应用