the rotary control head

基本解释

And then, the mathematics model was firstly set up to analyze the force that the rotary control head endured when the preventer installed aslant.
并在此基础上通过建立力学数学模型完成旋转控制头在安装偏斜的情况下的动力学分析。
Attempt has been made to solve the problem caused by mud loss in China with rotary control head, but it was not a real "under-balanced" practice.
我国虽有利用旋转控制头等欠平衡钻井关键设备解决浅海钻井井漏问题的探索实践，但还没有实现真正意义上的“欠平衡钻井”。
As the key part of the rotary control head's bearing assembly , the capability of the rotary dynamic seal equipment effects on the using life of the rotary control head.
旋转动密封装置是旋转控制头轴承总成的关键部件，其性能好坏直接影响旋转控制头的使用寿命。