Discusses closed-loop ground source heat pump without antifreeze used in Tianjin and heat pump with flooded evaporator,energy saving of the system is obviously.是什么意思_Discusses closed-loop ground source heat pump without antifreeze used in Tianjin and heat pump with flooded evaporator,energy saving of the system is obviously.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句