上轨: SMA(HIGH,21,2)*1.05,COLORGREEN;
下轨: SMA(LOW,21,2)*0.95,COLORYELLOW;
中轨: SMA(LOW,5,1),COLORMAGENTA;
趋势: SMA(CLOSE,2,1),COLORCYAN;
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波段买入:IF(crOSS(趋势,中轨),上轨*1.05,中轨),COLORMAGENTA;
领头羊:IF(CROSS(趋势,上轨),上轨*1.10,下轨),COLORYELLOW;
