学会这个方法，抓10倍大牛股的概率提升10倍>>

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;