Ram - type blowout preventer is important equipment used in oil drilling operation.

闸板防喷器是石油钻井过程中的一种重要设备.

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We do not use this valve to control the blowout preventer.

我们不用这个凡尔控制防喷器.

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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.

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For use with backflow preventer test cocks to protect from damage.

用于防回流阀测试旋塞,防止受到破坏.

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The blowout preventer was made by Cameron International, a specialist engineer.

而防喷装置是卡梅伦国际(一家专业工程公司)承建.

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The backflow preventer must be installed upstream of the regulator.

防倒流装置必须安装在调节阀的上游位置.

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The results show that the rust preventer functions fairly well.

结果表明该防锈剂的防锈效果显著.

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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.

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Other medicines are also available - include long - acting reliever and preventer tablets.

还有一些其他的 长效 的缓解类和预防类药物的片剂.

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Installing a backflow preventer in a pit or vault is not recommended.

不建议在坑内或拱顶内安装防回流阀.

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We have been repairing the control system for b 1 owout preventer.

我们一直在修防喷器的控制系统.

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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.

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Four required per backflow preventer.

每个防回流阀需要四个.

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The next approach to the well will focus on the the blowout preventer.

下一步措施将集中于防喷器口.

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If you use preventer medicine , take it asby your doctor or asthma nurse.

如果你在使用预防药,最好按照说明或遵从医嘱.

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