采用了相对强度噪声(RIN)的分析方法，对高功率激光光束在多级介质中传输的光强分布情况在频域内进行了定量的分析。
Relative intensity Noise (RIN) has been adopted to study the intensity distributions of laser beams propagating in the muti-stacked medium in frequency domain.
本文采用双光路激光系统，对亚麻尘的相对浓度进行了连续测量，具有测量范围宽、 灵敏度好、 抑制激光强度起伏噪声等特点。
The two laser beam system has been used to measure the relative density of linen dust, with the feature of wide measurement range, good sensitivity and restraining the intensity fluctuation noise.
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