趋势线:=(CLOSE-MA(CLOSE,40))/MA(CLOSE,40)*100;
BB:=((REF(趋势线,1)-25) AND 趋势线>=REF(趋势线,1)) OR (REF(crOSS(-20,趋势线),1) AND CROSS(趋势线,-20));
见底信号:BB;
趋势线:=(CLOSE-MA(CLOSE,40))/MA(CLOSE,40)*100;
BB:=((REF(趋势线,1)-25) AND 趋势线>=REF(趋势线,1)) OR (REF(crOSS(-20,趋势线),1) AND CROSS(趋势线,-20));
见底信号:BB;