The main part of the cooling system is a 3-wheel air-cycle machine which works as a self-controlled system for heating and cooling.
冷却系统的主要部件是一部3轮空气循环机，是可以进行加热和制冷工作的自维持系统。
With the temperature-controlled nodal operation self-heating system, this product can be used in the winter season of north China.
采用温控节点控制自动加热系统，保证北方地区冬季能正常使用；
With the temperature-controlled nodal operation self-heating system, this product can be used in the winter season of north China.
采用温控节点控制自动加热系统，保证北方地区冬季能正常使用；
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