趋线:(close-ma(close,40))/ma(close,40)*100,coloraabbdd,nodraw;
aa:=((ref(趋线,1)<ref(趋线,2) and 趋线<-30) and 趋线>=ref(趋线,1)) or (ref(cross(-30,趋线),1) and cross(趋线,-30)) or 趋线=-30;
卖田:=if(aa,65,12),coloryellow,linethick2;
bb:=((ref(趋线,1)<ref(趋线,2) and 趋线<-20 and 趋线>-25) and 趋线>=ref(趋线,1)) or (ref(cross(-20,趋线),1) and cross(趋线,-20));
见底:=if(bb,58,12),colorred,linethick2;
cc:=((ref(趋线,1)<ref(趋线,2) and 趋线<-25 and 趋线>-30) and 趋线>=ref(趋线,1)) or (ref(cross(-25,趋线),1) and cross(趋线,-25));
机会:if(cc,40,12),color00ff00;
快到底:if(cross(-20,趋线),75,12),linethick2,colorf0f000;
drawtext(cross(-20,趋线),80,'快到底'),colorf0f000;
来临:if(cross(-25,趋线),80,12),linethick2,colorf00ff0;
drawtext(cross(-25,趋线),90,'来临'),colorf00ff0;
抄底了:if(cross(-30,趋线),55,12),linethick2,colorwhite;
drawtext(cross(-30,趋线),55,'抄底了'),colorwhite;
c1:=((ma(c,30)-l)/ma(c,60))*200;
临界点:if(c1>30,30,12),linethick2,colorred; 
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