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GB 51251-2017 第2.1.4条 Technical Standard for Smoke Control and Exhaust Systems in Buildings

Terminology消防工程

GB 51251-2017 第2.1.4条

| **** | **Mechanical smoke exhaust**: Forced smoke exhaust via smoke exhaust fans, ducts and other equipment. Applicable to corridors, rooms and underground areas in hotels that have no external windows or insufficient external window area. |

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