SHORT:=12;LONG:=26;MID:=9;DIF:=EMA(CLOSE,SHORT)-EMA(CLOSE,LONG);DEA:=EMA(DIF,MID);JCCOUNT:=COUNT(OSS(DIF,DEA),BARSLAST(DEA>=0));:=CROSS(DIF,DEA) AND DIF<-0.1;:=CROSS(DIF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1;双:低位金叉 AND 二次金叉;