The fresh air ventilator is an important equipment of air's quality regulating.

新风换气机是调节空气品质的重要设备，换热器是新风换气机的关键部件。

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Pressurized ventilator( air feed) and smoke extraction fan are interlockingly controlled.

加压送风机（补风）与排烟风机联锁控制。

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This paper analysis the energy saving mechanism of frequency converted regulating speed ventilator, and some energy consumption computing methods of supply air filter in VAV system.

本文对变频风机的节能机理进行了分析，对变风量系统中过滤器的能耗的几种计算方法进行了讨论。

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Dr Chris Guz explained that patients often reacted as the breathing tube of the ventilator was placed in their air passage.

BBC: Barry McCarney

Later, the a tube can be passed down the throat or nasal passages so that air can be mechanically forced in by a bag or a ventilator.

BBC: Minutes matter