The causes of degeneration and death of the SGN in acoustic trauma are as yet not completely known.
噪声通过机械、代谢和血运等途径损伤毛细胞的机制已基本明确，但SGN的变性死亡的原因还不清楚。
2
The integration uncertain border value is estimated by fuzzy inference and the soft switch control is accomplished by tanh (x) function replacing SGN (x).
根据模糊推理估计集成不确定边界，利用双曲正切函数代替符号函数实现软切换连续控制。
3
This paper studies the relaxation in the two—Level system of the Laser superradiation interacted with radiation by the method of coherence, and gives the solution of light field about sgn.