coal mine main fan 煤矿主扇风机
mine main fan power 大功率矿用主通风机
mine well main fan 矿井主扇
mine ventilation main fan 矿井通风主扇
main mine fan 矿井主扇
mine ventilation for main fan 矿井通风主扇
main fan of mine 矿井主扇
main fan for mine 矿井主扇风机
The economic reasonabless of mine main fan ventilation and measures of saving power are expounded in the paper.
阐述了矿井主扇通风的经济合理性及节约主扇电耗的措施。
The diffuser of mine main fan is a device to use reducing velocity pressure of outlet, increase static pressure and recovery kinetic energy.
矿井主扇扩散器是用来降低出口速压以提高风机静压而回收风机出口动能的装置。
This is directed against structure defect of mine old type tube - axial fan, make technique transform to combine practice, raises main fan running efficiency, receives notable economic benefits.
针对矿井老型号轴流式扇风机的结构缺陷，结合现场实际进行了技术改造，提高了主扇运动效率，收到了显著的经济效益。
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