Numerical simulation of the capping operation of annular blowout preventer
环形防喷器封井过程的数值模拟
Slowly open upstream shutoff and allow the backflow preventer to fill slowly.
慢慢开启上游关闭阀，让防回流阀慢慢注水。
Numerical Simulation on Working Process of New Type Bore Ram Blowout Preventer
新型闸板防喷器封井过程数值模拟
Finite Element Analysis and Structure Optimization of Single Ram Type Preventer
单闸板防喷器主壳体的有限元分析及结构优化
Note Local codes typically require the use of a backflow preventer in the system.
注当地规程一般都要求在系统上使用防倒流装置。
While we were installing the blowout preventer, they were cleaning the mud tanks.
当我们装防喷器的时候，他们在清理泥浆罐。
The annular BOP is the important assembly of the blowout preventer control system.
环形防喷器是井口防喷控制装置的重要组成部件之一。
During the process of using the Ram Blowout Preventer, the sealing effect is the key.
闸板防喷器在使用过程中，密封效果是关键。
Contact the factory for specific approvals on the reduced pressure backflow preventer.
如果需要特殊的减压防回流阀的认证，请与工厂联系。
The enclosure and the backflow preventer shall be covered by a single warranty policy.
这种外壳和防回流阀应该应用相同得质量保证政策。
Backflow preventer manufactured from 298 Series stainless steel for corrosion resistance.
防回流阀采用耐腐蚀得300系列不锈钢制造。
Backflow preventer manufactured from 300 Series stainless steel for corrosion resistance.
防回流阀采用耐腐蚀的300系列不锈钢制造。
Reported that the key to the blowout preventer valve equipment is well, it malfunctioned.
报道称，关键装备是油井得防喷阀，它发生了故障。
NOTE DO NOT USE A PIPE WRENCH TO REMOVE THE RELIEF VALVE ASSEMBLY FROM THE BACKFLOW PREVENTER.
注意不要使用管钳从防回流阀上拆卸安全阀总成。
The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer.
带测试旋塞的关闭阀应该安装在防回流阀的进口侧。
A ram blowout preventer consists of two halves of a cover for the well that are split down the middle.
闸板式防喷器包括沿中间分开的两个半盖。
Do you think it necessary to have any further improvements in the control system of blowout preventer?
你认为有必要对防喷器控制系统再做进一步改进吗？
Right at twenty past two Mr. Harrison ordered a drilling toolpusher to start examining the blowout preventer.
正好在两点二十分哈理森先生命令钻井技师检查防喷器。
Downhole blowout preventer that is a safety devices is installed in the drill that connected with the drill string.
井下防喷器是安装在钻具上，并且和钻柱相连的安全装置。
Simulation study on mechanical conditions in the working process of the front seal of variable bore ram blowout preventer
可变径闸板防喷器前密封封井过程受力模拟研究
The world fine provided in the same rank vehicle type the only sign to prepare the constant speed cruise and the overspeed preventer.
世嘉配备了同级别车型中唯一标备了定速巡航与限速器。
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