燃气和热泵梯次加热一体式热水器具开发
郭延隆, 管江勇, 闫苇, 何子坤, 莫凡龙
Cascade heating development of direct heating water heater with gas and heat pump
GUO Yanlong, GUAN Jiangyong, YAN Wei, HE Zikun, MO Fanlong
家电科技
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2021, (zk): 19
-22
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DOI: 10.19784/j.cnki.issn1672-0172.2021.99.005
