Q1:=(CLOSE-LLV(LOW, 18))/(HHV(HIGH, 18)-LLV(LOW, 18))*100; Q2:=SMA(Q1, 9, 1); Q3:=SMA(Q2, 3, 1); AA:=3*Q2-2*Q3; VAR1:=(2*C+H+L)/4; VAR2:=LLV(LOW,34); VARA:=HHV(HIGH,34); BB:=EMA((VAR1-VAR2)/(VARA-VAR2)*100,8); 选股:CROSS(AA,BB) AND AA>REF(AA,1) AND BB>REF(BB,1) AND AA<20;