This paper presents a method of measuring the particle mean size and dust concentration by small angle near forward light scattering optics and the extinction theory.
本文综合前向小角光散理论及消光原理，提出一种测量粉尘平均粒径及粉尘浓度的光学方法。
2
And the effects of small changes of thin film thickness, incident angle and wavelength on extinction index of this polarizer are also studied.
同时研究了薄膜厚度、入射角及波长的微小变化（或误差）对于该偏振器消光率的影响。
3
The extinctionangleof the DC converter, which is usually used to study the commutation failure of the DC inverter, is an important parameter in the DC transmittal system.