XA1:=IF(DATE<99999999,1,DRAWNULL); MXD:=IF((DATETODAY(DATE))<99999999,1,DRAWNULL); ma20:=MA(C,20)*MXD; 趋势线:=MA(C,6)*XA1,COLORGREEN,LINETHICK2; 大牛:=crOSS(趋势线,MA20)*XA1; 行情开始:大牛;