It points out that obsolete common axial local fan copying Soviet Union (international level) is excellent local ventilation device for mine in our country.
指出被淘汰的仿苏(国际水平)普通轴流式局扇是我国优良的矿用局部通风设备。
The technology principle, construction and design calculation of resistance noise reduction for HD6 5 1 big power local ventilation fan developed recently are discussed in this paper.
介绍了新研制的HD 6 5 1型大功率局部通风机成功降噪的阻性消声技术原理、结构和有关计算，并应用在通风机上进行实际检测。
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