名词
中文翻译：封闭式曲轴箱通风系统
同义词：
['closed crankcase', 'closedcrankcase ventilation']
例句：
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1. The closed crankcaseventilation system helps to reduce enginenoise during operation.
封闭式曲轴箱通风系统有助于减少发动机运行时的噪音。
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2. Thenew car features a closed crankcaseventilation system that improves fuelefficiency.
这款新车配备了封闭式曲轴箱通风系统，提高了燃油效率。
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3. The engineers worked on the closed crankcaseventilation system to ensure smooth operationof the engine.
工程师们致力于改进封闭式曲轴箱通风系统，以确保发动机的顺畅运行。