The control system, which uses tiny compressors to pump air in and out of the panels, is in the centre.

位于中心的控制系统通过微型空气压缩机控制三角面板里的空气压力。

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Tubes within each device pump air bubbles through to support the autotrophs.This also circulates the sewage to feed the bacteria.

设备内的水管使气泡穿过设备，为自养生物提供养分，同时使污水循环，为细菌提供养分。

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Tubes within each device pump air bubbles through to support the autotrophs. This also circulates the sewage to feed the bacteria.

设备内的水管使气泡穿过设备，为自养生物提供养分，同时使污水循环，为细菌提供养分。

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You're taking the air inside of the pump and you're compressing it. You're doing it so fast that there's not enough time for heat to come out of the gas that's inside the pump towards the walls of the pump.

你把空气吸进气筒里并且压缩它,你的动作很快以至于,没有足够的时间让热量,从气筒里面跑出来,传递到气筒壁上。

麻省理工公开课 - 热力学与动力学课程节选

But you don't compress it so quickly that you're not in there reversible process so you compress that if you were to feel the temperature of the air and you can feel it through the nozzle gives you an idea of the temperature of the air inside your bicycle pump.

但是压缩速度,也不能太快,否则就不是,可逆过程了,这样当压缩气体时,从喷嘴可以感受到,内部气体的温度。

麻省理工公开课 - 热力学与动力学课程节选

There would also be an inflatable ring around the baby, allowing it to feel more secure and to mimic the conditions in the womb, and a humidifier would pump warm air around inside.

BBC: Baby in an incubator

This eliminates the need for an air pump, resulting in a small inhaler the size of a Magic Marker.

FORBES: Waiting to Inhale

The most effective way to deal with radon is to fit an air pump to a property to vent the gas into the atmosphere.

BBC: Radon