N:=9;M1:=3;快线:=(CLOSE-LLV(LOW,N))/(HHV(HIGH,N)-LLV(LOW,N))*100,LINETHICK2,COLORRED;慢线:=SMA(快线,M1,1);BB点选股:IF(BARSLAST(CROSS(慢线,快线))>=3 AND CROSS(快线,慢线) AND 慢线<30,1,0);