超跌博反弹副图 信号少而且准！！指标源码

X_1:=MA(CLOSE,20);

X_2:=X_1-2*STD(CLOSE,20);

RET:CLOSE>X_2 AND REF(CLOSE,1)<X_2 AND REF(COUNT(CLOSE<X_2,8)=3,1) AND REF(VOL,1)=REF(HHV(VOL,8),1);