combined heat pump

• 组合式热泵

combined heat pump的用法和样例：

例句

1. The heating load per unit cost was taken as the thermoeconomic objective function with the model of a class of endorversible four-temperature-level heat transformers as the basis.
   摘要基于一类内可逆四温位吸收式热变换器模型，应用以每单位成本的泵热率作为热经济学目标函数。