Middle and low frequency noise may affect workers' hearing system, nervous system, cardiovascular system, digestive system and metabolism.
结论中低频噪声接触导致作业工人听觉系统、神经系统、心血管系统、消化系统以及代谢功能的影响。
To learn the effect of middle and low frequency noise on the health of electricity producing workers, and to provide basis for finding effective preventive measures.
目的了解中低频噪声接触对电力生产工人健康的影响，为采取切实有效的防范措施提供依据。
The result shows that average absorption coefficient and noise reduction coefficient separately equal to0.58and0.60 and fine property of sound absorption at middle-low frequency.
结果表明材料的平均吸声系数和降噪系数分别达0。58和0。60，且材料的中低频吸声性能优良。
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