RT Journal T1 Influence Mechanism of the Mean Values on POD Method A1 Yanhua Cao,Nan Li,Mengcheng Chen PB Acta mathematica scientia,Series A FD 2019-10-26 YR 2019 JF Acta mathematica scientia, Series A JO Acta mathematica scientia,Series A VO 39 IS 5 SP 1205 DO K1 ;POD method;Mean values;Whole signals LK {http://121.43.60.238/sxwlxbA/EN/article/article_15964.shtml}