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- electric drive of drilling rig 电驱动钻机
- Control of operation of drill pump with slight pressure fluctuation for electric drive drilling rig 电动钻机实现钻井泵软泵运行的控制技术研究
- oil drilling rig electric drive system 石油电驱动钻机
- Some remarks on developing technique of drilling rig disc brake in China. 关于发展我国钻机盘式刹车技术的几点认识。
- TX Study on Power House 's Craning of Electric Drive Drill Rig 电驱动钻机动力房起吊的研究
- Large degree of freedom of drilling frame structure can enlarger efficiently operation scope of drill rig. 多自由度钻架结构，有效地扩展了钻机的作业范围。
- A new AC conversion electric driven drilling rig 新型交流变频电驱动石油钻机
- electric driven oil drilling rig 电驱动钻机
- This paper is a part of a project which is construction on integrated laboratorial platform of drilling rig hoisting system. 本文系钻机起升综合实验台架建设的部分研究内容。
- Integrated hydraulic supply is a new assignment,as more and more hydraulic corollary equipments of drilling rig have come out. 针对当前钻机液压配套设备越来越多的趋势,研制了集成化液压源。
- The confident estimation to the headframe and bed plate of drilling rig is done by this method,the computational solution is identic... 弥补了石油行业在无故障数据可靠性评定方面的不足。
- The characters of the electric drive of crank shaft press were studied from the viewpoint of the press working behavior. 从曲柄压力机的工作性质出发,分析了其电力拖动的特点以及电机功率的选择问题。
- variable-frequency drive system of drilling rig 变频钻机电传动系统
- Abstract The necessity of the shush pump with forward rotating of drilling rig is analyzed,advantages and disadvantages of various transmission plan were compared and described. 分析了石油钻机中使钻井泵正转的必要性；对实现正转的各传动方案进行了对比分析；简述了各种传动方案的优缺点。
- The fuzziness of various constraints of stress, displacement, local buckling and section size is considered in the fuzzy optimum design of drilling rig substructures. 考虑了应力约束、位移约束、局部稳定约束和截面尺寸上下界约束条件的模糊性,以底座的结构质量为目标函数,建立了底座结构模糊优化设计的数学模型。
- electric control system of drilling rig 石油钻机电控装置
- The drilling rig independent electric drive rotary table and its power configuration 石油钻机独立电驱动转盘及动力的配置
- The purpose of adding an electric generator on the transmission mechanism of drilling rigs is making full use of the power of the diesel engines. 在石油钻机的传动装置上增设一台发电机（简称节能发电机），目的是充分利用钻井柴油机的功率。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- Harmonic influence and resolvents on DC electric drive system of oil drilling rig 石油钻机直流电驱动系统的谐波影响及其解决方案
