论文1
http://www.cs.tut.fi/sgn/SSSAG/BCG.htm
论文2
https://pubmed.ncbi.nlm.nih.gov/27503664/
https://www.nature.com/articles/srep31297
://benthamopen.com/FULLTEXT/TOBEJ-4-201/FIGURE/F3/
非常好的论文，建议读。
https://www.mdpi.com/1424-8220/19/6/1451/htm
下面文章说BCG是描述血液的流速
https://faraday.physics.utoronto.ca/GeneralInterest/Harrison/BCG/BCG.html
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3313588/
https://iopscience.iop.org/article/10.1088/0967-3334/29/7/006