MACD2:=(EXPMA(CLOSE,30)-REF(EXPMA(CLOSE,30),1))/REF(EXPMA(CLOSE,30),1)*100;
DIF2:=EMA(SUM(MACD2,2),3);
DEA2:=MA(DIF2,3);
買入1:CROSS(DIF2,REF(DIF2,1));
MACD2:=(EXPMA(CLOSE,30)-REF(EXPMA(CLOSE,30),1))/REF(EXPMA(CLOSE,30),1)*100;
DIF2:=EMA(SUM(MACD2,2),3);
DEA2:=MA(DIF2,3);
買入2:CROSS(DIF2,DEA2);