LOWER:=BOLL-2*STD(CLOSE,20); 大黑马:CROSS(C,UPPER) AND C/REF(C,1) 1.05,COLORRED; 公式模块: BOLL:=MA(CLOSE,20); UPPER:=BOLL+2*STD(CLOSE,20); 红箭头:CROSS(C,UPPER) AND C/REF(C,1) 1.05;