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。
The tube silencers 23 have open end portions arranged to face the fan and the silencers of the first set 18 are spaced from the silencers of the second set 24 in both axial and radial directions.
管道消音器(23)具有敞开端部，其被设置为面对风扇，并且第一组(18)的消音器与第二组(24)的消音器沿轴向方向和径向方向分隔开。
The tube silencers 23 have open end portions arranged to face the fan and the silencers of the first set 18 are spaced from the silencers of the second set 24 in both axial and radial directions.
管道消音器(23)具有敞开端部，其被设置为面对风扇，并且第一组(18)的消音器与第二组(24)的消音器沿轴向方向和径向方向分隔开。
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