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介绍了一种具有技术创新意义的中小型风机节能技术，且在崖头煤矿通风系统中应用多年，促进了完全生产，经济效益显著，具有较好的推广前景。
This paper introduces a kind of small and medium-sized fan energy-saving technology with the meaning of technological innovation. It has been applied for many years in the ventilation system of Yatou Coal Mine and has promoted the complete production with remarkable economic benefits and good promotion prospects.