GB 50067-2014 第8.2.3条
| **** | Smoke exhaust fans may use centrifugal fans or smoke exhaust axial fans, and shall be guaranteed to operate continuously for 30 min at 280℃. |
| **** | Smoke exhaust fans may use centrifugal fans or smoke exhaust axial fans, and shall be guaranteed to operate continuously for 30 min at 280℃. |
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