传统的噪声控制主要是从减低人耳听力损伤方面考虑来进行噪声控制的——降低噪声声级。

Traditional noise control mainly focus on reducing the damage to human ear by decrease noise.

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该参量考虑了临界面上的两个控制疲劳损伤的主要参数，因而其本身具有一定的物理意义。

To some extent, it has a clear physical significance due to taking into account of two main strain parameters on the critical plane.

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