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N:20;
BOLL1:MA(C,N);
UB1:BOLL1+1*STD(C,N);
LB1:BOLL1-1*STD(C,N);
上升:IF(BOLL1>REF(BOLL1,1),BOLL1,DRAWNULL),LINETHICK2,COLORRED;
下降:IF(BOLL1<=REF(BOLL1,1),BOLL1,DRAWNULL),LINETHICK1,COLORGREEN; 上拐:IF(UB1>REF(UB1,1),UB1,DRAWNULL),LINETHICK2,COLORMAGENTA;
下探:IF(UB1<=REF(UB1,1),UB1,DRAWNULL),LINETHICK1,COLORCYAN;
上去:IF(LB1>REF(LB1,1),LB1,DRAWNULL),LINETHICK2,COLORMAGENTA;
下来:IF(LB1<=REF(LB1,1),LB1,DRAWNULL),LINETHICK1,COLORCYAN; 用法：选强势股（放量涨停），线上 持股线 下卖。线上指的是上轨 中轨水平不操作，中轨拐头向上后 进场点，股价突破上轨 买进，只要不跌破上轨就一直持有；回踩中轨少 买，突破上轨加仓。之后是回踩上轨不破出现阳线买入；飞龙战法有四次买入机会；前三次小赚或保本，只有第四次能大赚。和MACD红马飞升、成交量配合使用
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