The low frequency noise will hurt chronically and can make nervous sympathetic nerve,tachycardia,high blood pressure and maladjusted incretion,even will affect the fetus of the pregnant woman.

• 低频噪声会造成慢性损伤,会使人的交感神经紧张、心动过速、血压升高、内分泌失调,甚至影响到孕妇腹中的胎儿。