英德
有道
百度
谷歌
图片
维基
百科
控制头
[油气] control head
- 旋转控制头是负压钻井的一个关键装置，利用它和其它地面设备可实现边喷边钻。
Rotary control head is a key device in underbalanced drilling. Combined with other units, drilling while blowing out can be achieved. - 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。
And then, the mathematics model was firstly set up to analyze the force that the rotary control head endured when the preventer installed aslant. - 全自动的又分为时间型和流量型．全自动软水机的完全由电脑控制头控制，全自动运转，无需专人操作。
Automatic time-and flow is divided into type. Fully automatic water softener control head by a computer controlled, automatic operation, without hand operation.
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