Common form of the pressure switch, volume switch, time switch and flow switch, that is, to achieve the preset inspiratory pressure, capacity, time or flow rate is converted to breath.

常见的方式有压力切换、容量切换、时间切换和流速切换，即吸气达到预置的压力、容量、时间或流速则转为呼气。

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The waste heat is converted into cooling capacity, and the small heat surplus is dumped into aquifers 300 m below ground level, where it is stored and recovered in winter.

CNN: ASIANOW - TIME Asia