原创指标：黄金阶梯（通达信)

CC:=IF(WEEKDAY=5,C,DRAWNULL);   

DIFF:=(EMA(CC,12)-EMA(CC,26))/EMA(CC,26);   

DEAA:=EMA(DIFF,9),COLORYELLOW;   

牛市要来了:IF(DEAA>REF(DEAA,1) AND DIFF>DEAA,乖离底,DRAWNULL),LINETHICK3;