DIFF:=Ema(CLOSE,12) - EMA(CLOSE,26); DEA:=EMA(DIFF,9); JCCOUNT:=COUNT(crOSS(DIFF,DEA),BArslAst(DEA>=0)); 二次金叉:CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;