下行方面,我P6lH认为1月18日低点之后的小7SGZ趋势线水平1.2160和1.2080值得关注ySPm
Petkova,Ralitsa,DotheFama-Frenchfactorsproxyforinnovationsinpredictivevariables?Journaloffinance,Apr2006,61(2):581-612