![Buildings | Free Full-Text | Study on Air Cabin Ventilation System by Local Structural Optimization during Tunnel Construction Buildings | Free Full-Text | Study on Air Cabin Ventilation System by Local Structural Optimization during Tunnel Construction](https://www.mdpi.com/buildings/buildings-12-02235/article_deploy/html/images/buildings-12-02235-g001-550.jpg)
Buildings | Free Full-Text | Study on Air Cabin Ventilation System by Local Structural Optimization during Tunnel Construction
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Air vent duct of air conditioning and ventilation system on the wall of the building Stock Photo - Alamy
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Air duct, air conditioner pipe on white ceiling wall. Ventilation system on the ceiling of large building. Air condition and hvac system installation under bareskin ceiling before interior finishing. Photos | Adobe
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