波段指标，适合博易大师，文华，同花顺
卖出线: 99;
阶段卖: 90;
趋势: 3*SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1)-2*SMA(SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1),3,1);
底部: 10,COLORFF0000;
{买入警戒: IF(趋势<=10,50,0);}
买入信号: IF(CROSS(趋势,底部),50,0),COLOR0000FF;
卖出警戒: IF(趋势>=90,50,100),COLOR408000
