编写条件：

编写方法：

 DIFF:="macd.DIF";
DEA:="MacD.DEA";
T:=BArslAst(DEA<0);
SC:=crOSS(COUNT(CROSS(DEA,DIFF) AND T,T+1),0.5);
TT:=BARSLAST(SC);
XG:CROSS(COUNT(CROSS(DIFF,DEA) AND T AND TT<=13,T),0.5);