低环境温度空气源热泵
low temperature air source heat pump
低温空气源热泵标准
Standard on Low Temperature Air Cource Heat Pump
空气源复叠式热泵
cascade air-source heat pump
空气源空调系统
air source air conditioning system
空气源燃气机热泵
air-source gas turbine heat pump
空气源热泵空调系统
Air-source heat pump air conditioning system
空气源热泵热水机
air source heat pump water heater