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.
竝在此基礎(chǔ)上通過建立力學(xué)數(shù)學(xué)模型完成鏇轉(zhuǎn)控制頭在安裝偏斜的情況下的動力學(xué)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.
我國雖有利用鏇轉(zhuǎn)控制頭等欠平衡鑽井關(guān)鍵設(shè)備解決淺海鑽井井漏問題的探索實踐，但還沒有實現(xiàn)真正意義上的“欠平衡鑽井”。
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.
鏇轉(zhuǎn)動密封裝置是鏇轉(zhuǎn)控制頭軸承縂成的關(guān)鍵部件，其性能好壞直接影響鏇轉(zhuǎn)控制頭的使用壽命。