Therefore a method of the sound effect subjective feeling was obtained and could be means to assess the sound quality effect, mine noise and harmonized control.
从而获得音质效果主观感受的一种方法，为评价音质效果及煤矿噪声和谐化控制提供一种手段。
The noise produced by Roots blower was effectively reduced with advanced noise control techniques in the coal washing plant of Fenghuangshan Mine.
介绍了凤凰山矿洗煤厂罗茨鼓风机房内外采用先进的噪声控制技术，有效地降低了罗茨鼓风机及周围的环境噪声。
Noise hazard of coal mine operation is serious, and needs comprehensive control.
目的了解煤矿井下作业噪声危害现状，探讨防治对策。
Noise hazard of coal mine operation is serious, and needs comprehensive control.
目的了解煤矿井下作业噪声危害现状，探讨防治对策。
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