趋势线: 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);

见底信号: 10;

买点准备: IF(趋势线<=10,50,0);

买入时间: IF(CROSS(趋势线,见底信号),100,0);