Electro liquid control plug valve is the high and new technical equipment applied in FCC unit in recent years.

电液控制塞阀是近年来应用于流化催化裂化装置的高新技术设备。

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Introducing the properties of goggle type board Plug valve, analyzing the characteristics of the valve, proposing the methods of improving sealing structure.

介绍了眼镜式插板阀的性能，分析了该阀门的密封特点，提出了改进密封结构的方法。

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You take a throttle valve, which consists of some sort of porous plug between two cylinders that is insulated. There is insulation here.

有一个节流阀，它由一些多孔的塞子组成,这些多孔塞在两个绝热的汽缸之中,这里是绝热的，底下也是绝热的。

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They're making plans now for -- even as they drill these two relief wells that optimistically will take quite some time -- how do we plug this leak either through using the robotics to effect the valve -- how are we dispersing this so that that oil never gets to the top and then through a natural system gets -- largely dissipates at the bottom?

WHITEHOUSE: Aboard Air Force One En Route Andrews Air Force Base