【医】差异显著平准

significance of difference testing significance of difference significance of selling activities for consumer preference level difference difference of depth of modulation probable error of difference dissipation of difference scheme difference of observation calculus of finite difference difference of fundamental frequences anomaly of geopotential difference chromatic difference of rotation significance test of difference level of significance test level of significance sample level of significance significance of the difference between two means significance of the difference between two proportions difference of level level difference of sieve tray floor be of no significance