ema3:=Ema(C,3),COLORWHITE,LINETHICK2;
EMA13:=EMA(C,13),COLORYELLOW;
EMA21:=EMA(C,21),COLORFF00FF;
EMA55:=EMA(C,55),COLORGREEN;
HR2:=EMA3>=REF(EMA3,3) AND EMA13>=REF(EMA13,1) AND EMA21>=REF(EMA21,1) AND crOSS(C,EMA3) AND CROSS(C,EMA13) AND CROSS (C,EMA21){ AND CROSS(C,EMA55)};
三进场:HR2 AND FILTER(HR2,10);