MACD叫好之低位金叉选股指标公式
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difF:=ema(CLOSE,12)-Ema(CLOSE,27);
DEA:=EMA(DIFF,9);
macd:=2*(DIFF-DEA),LINETHICK2;
低位金叉:crOSS(DIFF,DEA) AND DIFF<-0.1;