编写条件：
求“三平底'”选股公式？ 源码： AA:=CLOSE>REF(CLOSE,1) AND REF(CLOSE,1)>REF(CLOSE,2) AND REF(CLOSE,1)编写方法：
AA:=CLOSE>REF(CLOSE,1) AND REF(CLOSE,1)>REF(CLOSE,2) AND REF(CLOSE,1)<REF(CLOSE,3) AND IF(REF(CLOSE,3)<REF(CLOSE,4),1,IF(REF(CLOSE,4)<REF(CLOSE,5),REF(CLOSE,1)<REF(CLOSE,4) OR (REF(CLOSE,2)<REF(CLOSE,4) AND REF(CLOSE,3)>=REF(CLOSE,5)),IF(REF(CLOSE,5)<REF(CLOSE,6),1,REF(CLOSE,6)<REF(CLOSE,7))));
AA AND CLOSE>REF(OPEN,2);
