分析了可调喷射式热泵的特点，提出一种采用可调喷射式热泵改造纸机干燥部供热系统的方案。
The paper introduces the innovations made upon drying section of sack paper machine and presents the basic running data after the innovation and the effects of the innovation.
分析了可调喷射式热泵的特点，提出一种采用可调喷射式热泵改造纸机干燥部供热系统的方案。
The paper introduces the innovations made upon drying section of sack paper machine and presents the basic running data after the innovation and the effects of the innovation.
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