The control execution unit set comprises a controllable heating valve set and a controllable refrigerating valve set and can realize controllable operation of heating and refrigerating;
所述控制执行单元组包括可控加热阀门组和可控制冷阀门组，可实现制冷和加热的可控运行；
The control execution unit set comprises a controllable heating valve set and a controllable refrigerating valve set and can realize controllable operation of heating and refrigerating;
所述控制执行单元组包括可控加热阀门组和可控制冷阀门组，可实现制冷和加热的可控运行；
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