DIFF:=EMA(CLOSE,12) - EMA(CLOSE,26); DEA:=EMA(DIFF,9); A:=IF(CROSS(0,DEA),1,0); A1:=IF(DIFF<0 AND CROSS(DIFF,DEA),1,0); SS:=IF(A,SUM(A1,0),0); SSB:=HHV(SS,0); SSS:=SUM(A1,0); W底选股:SSS-SSB=2 AND SSS>REF(SSS,1) AND A1;