GB 50116-2013 第3.2.5条
| When the power supply lines and transmission lines of the automatic fire alarm system are installed outdoors, they shall be buried underground, and the burial depth shall not be less than 0.7m.
| When the power supply lines and transmission lines of the automatic fire alarm system are installed outdoors, they shall be buried underground, and the burial depth shall not be less than 0.7m.
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