YANG Yang, DONG Feng-zhong, NI Zhi-bo, PANG Tao, WU Bian, ZHANG Zhi-rong, ZENG Zong-yong, WANG Yu. Calculation of Stack Gas Flow Velocity Based on Optical Scintillation and Analysis of Path-weighting Function[J]. Acta Photonica Sinica, 2012, 41(4): 384