Ema3:=EMA(C,3),COLORWHITE,LINETHICK2; EMA13:=EMA(C,13),COLORYELLOW; EMA21:=EMA(C,21),COLORFF00FF; ER:=BArslAst(REF(crOSS(EMA21,EMA13),1)) AND CROSS(EMA13,EMA21); 均上攻:ER;