快线:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100; WD:=BArslAst(REF(crOSS(快线,20),1)); W底:(WD<15 AND 快线<30 AND 快线>REF(快线,WD+1) AND CROSS(快线,20));