本文应用随机信号处理理论和变换技术，以文献（２）给出的结论为基础，导出了带限条件下，频率源频率闪烁噪声的Ｎ样本，二样本抽样方差及ＡＬＬＡＮ方差的精......

We use a sample of type 2 active galactic nuclei(AGNs) from SDSS DR7 in which the [O III] λ5007 emission line can be mo......