SHORT:=39;LONG:=78;MID:=16; DIF:=EMA(CLOSE,SHORT)-EMA(CLOSE,LONG); DEA:=EMA(DIF,MID); JCCOUNT:=COUNT(crOSS(DIF,DEA),BArslAST(DEA>=0)); 二金:=CROSS(DIF,DEA) AND DEA<0 AND COUNT(JCCOUNT=2,21)=1; 二次金叉:二金;