The system mainly includes: the study on the physical significance and test methods of the main parameters of LD that includes the photoelectric properties, spectrum properties and so on.

本文研究了激光器的电压特性、阈值特性、功率特性、波长和光谱等相关参数的物理意义和测量方法；

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

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。

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