GB 50116-2013 第5.2.9条
| There should be no obstructions within 0.5m of the detector; the horizontal distance to the perforated air-supply ceiling outlet should be no less than 0.5m. |
| There should be no obstructions within 0.5m of the detector; the horizontal distance to the perforated air-supply ceiling outlet should be no less than 0.5m. |
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