名词
中文翻译：管道
同义词：
['pipe', 'tube', 'conduit']
例句：
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1.The engineer designed a plenum duct system to improve airflow in the factory.
工程师设计了一个管道系统来改善工厂的气流。
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2. The plenum duct was used to carry waste gases from the furnace.
这个管道用来输送从炉子排出的废气。
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3.The plenum duct was installed in the ceiling and connected to the ventilation system.
这个管道安装在天花板上，并与通风系统连接。