LL:=EMA (100*(C-LLV(LOW,34))/(HHV(H,34)-LLV(LOW,34)),3); DRAWBAND(LL,RGB(50,250,11),10,RGB(255,0,0)); DRAWBAND(90,0,10,0); 警示线:EMA (100*(C-LLV(LOW,34))/(HHV(H,34)-LLV(LOW,34)),3),colormagenta; 预警:90,POINTDOT; 安全区:10,POINTDOT;