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1. The rapid cut-off valve isused to prevent the flow of fluidswhen the pressure drops below a certain level.
快速切断阀用于在压力降至一定水平以下时防止流体流动。
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2. The engineer designedthe rapid cut-off valve to ensurethat the system could quickly shut down incase of an emergency.
工程师设计了快速切断阀，以确保系统能够在紧急情况下迅速关闭。
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3. The rapid cut-off valve wasinstalled at the bottom of the pipeline toprevent any potential leaks from causing damageto the surrounding environment.
快速切断阀安装在管道底部，以防止任何潜在的泄漏对周围环境造成损害。