N:=9;M1:=3;M2:=3;短线:=(CLOSE-LLV(LOW,N))/(HHV(HIGH,N)-LLV(LOW,N))*100,COLORMAGENTA,LINETHICK2;中线:=SMA(短线,M1,1),COLORYELLOW;长线:=SMA(中线,M2,1),COLORLIBLUE;BB:=IF(BARSLAST(CROSS(中线,短线))>=3 AND CROSS(短线,中线) AND 中线<30,20,0);XG:BB>0;