MACD在零下13日内2次金叉的选股公式。 编写条件：编写方法：DIFF:=EMA(CLOSE,12) - EMA(CLOSE,26),COLORWHITE,LINETHICK1;DEA:=EMA(DIFF,9),COLORYELLOW,LINETHICK2;JCCOUNT:=COUNT(OSS(DIFF,DEA),BARSLAST(DEA>=0));:CROSS(DIFF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,13)=1;