2021-06-19 13:00发布 生成海报
MID : MA(CLOSE,7),POINTDOT,LINETHICK7,COLORwhite;
UPPER: MID + 2*STD(CLOSE,7),linethick3,colorwhite;
LOWER: MID -2*STD(CLOSE,7),linethick3,COLORwhite;