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) COLORRED LINETHICK2; 见底信号:=10; 买入时间:IF(crOSS(趋势线,见底信号),50,0) COLORGREEN;