穿双阴(选股、源码)

A1:=REF(C<O,2);
A2:=REF(C<O,1);
A3:=C>O AND C>=REF(O,1) AND VOL/REF(VOL,1)>=0.5;
XG:A1 AND A2 AND A3 AND REF(VOL,1)>REF(VOL,2);