cascade air-source heat pump的意思|示意
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梯级式空气源热泵
cascade air-source heat pump的网络常见释义
空气源复叠式热泵 ...统_暖通空调在线 关键词：空气源复叠式热泵,双级耦合热泵,低温环境,相变蓄能, [gap=606]Keywords：cascade air-source heat pump,double stage coupling heat pump,low temperature condition,phase change thermal ..