会买也要会卖铁的纪律源码副图

	N:=25; A:=1,COLORGREEN; 顶:1.,COLORGREEN; BOLL:=MA(CLOSE,N); UPPER:=BOLL+2*STD(CLOSE,N); LOWER:=BOLL-2*STD(CLOSE,N); BB:(C-LOWER)/(UPPER-LOWER),COLORYELLOW,LINETHICK2; 买入:CROSS(BB,0),COLORMAGENTA;