什么是短线交易？短线交易获利的关键在哪里？

STICKLINE(千手/A20>3,千手,0,3,0),COLORBLUE;STICKLINE(千手/A20>1.5 AND 千手/A20<=3,千手,0,3,0),COLOR99CCFF;STICKLINE( 千手/A20< 0.6,千手 ,0 , 3,0 ),COLOR00CC00;换手率:VOL/CAPITAL*100,COLOR0000FF,NODRAW;STICKLINE(crOSS(换手率,10),VOL/1000,(VOL/1000)/2,3,0),COLORFFFFFF;STICKLINE(换手率/REF(换手率,1)<=0.5,0,(VOL/1000)/2,2,0),COLORYELLOW;A:=MA(换手率,2);X:=LLV(A,20),;X1:=(A-LLV(A,20))=0;换手最小:IF(EVERY (A>0,5) AND FILTER(X1,5),X1,0),COLORFF0099,NODRAW;小天:=BArslAST(换手最小);X2:=HHV(A,20);X3:=(A-X2)=0;换手最大:IF(EVERY(REF(A,1)<X2,5) AND FILTER(X3,5),1,0),COLOR0000FF,NODRAW;