GB 50015-2019 第4.9.9条
- **** | Pool inlets, outlets and drain outlets shall be fitted with grilles with a gap ≤10mm, and the return outlet flow velocity shall be ≤0.5m/s.
- **** | Pool inlets, outlets and drain outlets shall be fitted with grilles with a gap ≤10mm, and the return outlet flow velocity shall be ≤0.5m/s.
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