缩量跌后放量涨再缩量跌的选股公式

AA:=C<REF(C,1) AND V<REF(V,1);
BB:=C>REF(C,1) AND RANGE(V,REF(V,1),REF(V,1)*1.5);
XG:REF(AA,2) AND REF(BB,1) AND AA;