飞机启动发动机时空调系统效果不是很好。
The air conditioning system doesn't work well when engine starts to work.
空调系统是通过使用机械装置来实现对诸如家庭，办公室，剧院，学校，工厂，飞机，和汽车等环境的控制。
Air conditioning is the use of mechanical systems to achieve that control in such places as homes, offices, theaters, institutions, factories, airplanes, and automobiles.
举个例子，在上一代飞机中，引擎中的高压气通过排除阀到达辅助动力系统，该系统控制着空调设备。
In last-gen aircraft, high-pressure gas is taken from the engine and transported through bleed valves to the auxiliary power system, which controls air-conditioning, for example.
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