G1:=CLOSE; G2:=LOW; G3:=OPEN; G4:=HIGH; 趋势线:((G4+G2+G1)/3-MA((G4+G2+G1)/3,84))/(0.015*AVEDEV((G4+G2+G1)/3,84)),COLORYELLOW,LINETHICK2; IF(趋势线>0,趋势线,NULL),COLOR0000FF,LINETHICK2; IF(REF(趋势线,1)>200 AND 趋势线