N1:=12;N2:26;N3:=9;DIFF:=(EMA(CLOSE,N1) - EMA(CLOSE,N2));DEA:=EMA(DIFF,N3);2:=(2 * (DIFF - DEA));进攻:(((HHV(MD2,4) < 0> REF(MACD2,1))) AND (REF(MACD2,1) < REF(MACD2,2))) AND (REF(MACD2,2) < REF(MACD2,3));