矿用贯流风机噪声的主要成分是旋转噪声和涡流噪声。
The tubular cross flow fan is the main component of rotation noise and worm flow noise.
在实验室环境研究轴流式通风机噪声的主动控制问题。
The initiative control of the noise producing by axial flow ventilator is investigated in experiment environment.
通过实验研究离心风机蜗壳扩张角对风机噪声及效率的影响。
By experiment, for the effect of fan expending Angle to noise and efficiency study.
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