GB 50243-2016 第7.2.10条
| | Silencer installation: independent supports and hangers shall be provided; connections to air ducts shall be airtight; the direction of silencer blades shall match the airflow direction marking. |
| | Silencer installation: independent supports and hangers shall be provided; connections to air ducts shall be airtight; the direction of silencer blades shall match the airflow direction marking. |
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