还有一波选股公式[查股公式]

a1:=(CLOSE-LLV(LOW,20))/(HHV(HIGH,20)-LLV(LOW,20))*100;
a2:=SMA(a1,3,1);
a3:=SMA(a2,3,1);
a4:=3*a2-2*a3;
a5:= (HHV(HIGH,35)-CLOSE)/(HHV(HIGH,35)-LLV(LOW,35))*100;
空方:=MA((EMA(a5,2)),2);
浮筹:=MA(a4,30);
还有一波:CROSS(浮筹,空方) AND 浮筹<50;