名词
中文翻译：导管叶片
同义词：
['duct leaf', 'ducting']
例句：
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1.The duct blades are designed to direct airflow through the system.
导管叶片设计用来引导空气通过系统。
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2. The engineer carefully inspected each duct blade for wear and tear.
工程师仔细检查了每根导管叶片，以查看磨损情况。
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3.The new design of the duct blades has improved efficiency by up to 20%.
新设计的导管叶片提高了效率高达20%。