A线:EMA(EMA(EMA(EMA(CLOSE,2),2),2),2),LINETHICK2,COLOR0000FF; B线:EMA(REF(A线,1),2),LINETHICK2,COLOR00FFFF; 趋势:EMA(EMA(EMA(EMA(EMA(CLOSE,55),2),2),2),2),LINETHICK2,COLORFF00FF;
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