the rotary control head

基本解釋

And then, the mathematics model was firstly set up to analyze the force that the rotary control head endured when the preventer installed aslant.
并在此基礎上通過建立力學數(shù)學模型完成旋轉控制頭在安裝偏斜的情況下的動力學分析。
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.
我國雖有利用旋轉控制頭等欠平衡鉆井關鍵設備解決淺海鉆井井漏問題的探索實踐，但還沒有實現(xiàn)真正意義上的“欠平衡鉆井”。
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.
旋轉動密封裝置是旋轉控制頭軸承總成的關鍵部件，其性能好壞直接影響旋轉控制頭的使用壽命。