三指标公式,共振选股
expma(17,17)金叉， macd强势，boll强势三共振选股
T:=CROSS(C,EXPMA.EXP2(17,17)); T1:=T AND (C-REF(C,1))/REF(C,1)>0.05; T2:=EXIST(CROSS(MACD.DIF,MACD.DEA),3) AND MACD.DEA>0; T3:=EXIST(C,BOLL.BOLL(25)); T1 AND T2 AND T3;
