N11:=9;M11:=3;快线:=(CLOSE- LLV(LOW,N11))/(HHV(HIGH,N11)-LLV(LOW,N11))*100;慢线:=SMA(快线,M11,1);BB:=IF(BARSLAST(CROSS(慢线,快线))>=3 AND CROSS(快线,慢线) AND 慢线<30,20,0);B选股:BB>0;