零轴下MACD两次金叉选股（底背离）

DIFF:=EMA(CLOSE,12)-EMA(CLOSE,26);
DEA:=EMA(DIFF,9);
A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));
底背离选股:REF(CLOSE,A1+1)>CLOSE AND DIFF>REF(DIFF,A1+1) AND CROSS(DIFF,DEA);
 

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