positive pressure air supply
positive pressure air supply
正压送风
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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When setting positive pressure mechanical air supply system in smoke controlling stair hall, the outer window in the hall must be fixed.
楼梯间设置正压送风系统时，楼梯间设置的外窗应明确为固定窗；
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In an embodiment, the blower is structured to supply air at positive pressure.
在一个实施例中，鼓风机被构造为以正压供应气体。
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