This article takes the vacuum column equipment for an example to do the external pressed vessel machinery design by using of computer programs.

本文以真空操作塔为例，辅助计算机程序以完成外压容器的机械设计。

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The reactor coolant (water) is used as actuating medium, pressed by pump, and then injected into hydraulic step cylinders which are set in the reactor vessel.

它以反应堆冷却剂(水)为工作介质，经泵加压后，注入安装在压力壳内的水力步进缸。

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Mr Walker said he and his daughter got to stop the traffic and shut the gates of the bridge before they pressed the button to raise the bascules and waved the vessel through.

BBC: Cabbie inventor of bridge game raises Tower Bridge