low steam pressure heat pump
low steam pressure heat pump
低蒸汽压力热泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Therefore it is in urgent need to develop and promote the heat supply system of low steam pressure heat pump, in which the steam working pressure is below 0.
通过设计、研究和生产运行实例，分析了低压蒸汽热泵的技术要点及推广价值。
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