BBI:="BBI";
中轴线:(MA(CLOSE,3)+MA(CLOSE,6)+MA(CLOSE,12)+MA(CLOSE,24))/4;
压力线: BBI+3*STD(BBI,10);
支撑线: BBI-3*STD(BBI,10);
安全线: MA(CLOSE,30), CIRCLEDOT,COLORFFFF00;