GB 50084-2017 第2.1.5条
| | **Dry system**: A closed system in which the piping is filled with pressurized gas used to actuate the system under normal standby conditions. Suitable for unheated areas within the hotel (e.g., rooftop water tank room). |
| | **Dry system**: A closed system in which the piping is filled with pressurized gas used to actuate the system under normal standby conditions. Suitable for unheated areas within the hotel (e.g., rooftop water tank room). |
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