名词
中文翻译：瓣膜管道
同义词：
['valvular tube', 'spiral tube例句：1. The valve is designed to prevent the flow of air in and out of the engine.（该阀门设计用来防止发动机内外部空气的流动。）']
例句：
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1. The valve is designed to prevent the flow of air in and out of the engine.
该阀门设计用来防止发动机内外部空气的流动。
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2.The process uses a spiral tube to separate oil from water.
该过程使用螺旋管将油与水分离。
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3.The valve was replaced after it failed during testing.
在测试中阀门失效后被更换。