DIFF:=EMA(CLOSE,12)-EMA(CLOSE,27);DEA:=EMA(DIFF,9);MACD:=2*(DIFF-DEA);JCCOUNT:=COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0));二次金叉:CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;