通达信超跌博反弹选股指标公式源码

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