GB 51251-2017 第5.2.1条
| **** | **Smoke exhaust fan control**: The smoke exhaust fan shall be capable of manual direct start/stop control from the fire control room and shall also be capable of local manual start. |
| **** | **Smoke exhaust fan control**: The smoke exhaust fan shall be capable of manual direct start/stop control from the fire control room and shall also be capable of local manual start. |
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