矿热锅炉 » Mine heating boiler 你这次来中国多少天？ » How many days you come to China this time?
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mine heating boiler
矿用供热锅炉
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Compared with the boiler heating system, the mine water-source heat pump system has obvious advantages in the energy-saving, environmental protection, economic efficiency.
与锅炉供热系统相比，矿井水源热泵系统在节能、环保、经济效益方面具有明显的优势。
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