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The discharging of the main fan reduces labour intensity of operating workers.
新型磨粉机关风机出料降低了操作工人的劳动强度。
Predictive control model for main fan synchronous motor is established on this fundamental.
在此基础上，建立了主扇同步机预测控制模型。
The function of the main fan in coal mine is to keep fresh air and reduce the concentration of gas.
煤矿主扇风机的主要功能是保证井下空气畅通新鲜，降低瓦斯浓度。
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