本指标为日K线指标，和网页版BBD一致，为剔除B股、权证、基金等之后BBD数据，免费帐号必需收盘后才能看到，只能这样了！
a=(ZDMR[-1]+BDMR[-1]);
b=(ZDMC[-1]+BDMC[-1]);
a1=SUM(a,1)/100000000;
b1=-SUM(b,1)/100000000;
STICKLINE(a1+b1>0,0,a1+b1,9,0),color0000ff;
STICKLINE(a1+b1<0,0,a1+b1,9,0),color00ff00;
当日净差【亿股】:SUM(a1+b1,1),coloryellow;
三日净差【亿股】:SUM(a1+b1,3),colorcyan;
五日净差【亿股】:SUM(a1+b1,5),colorred;
十日净差【亿股】:SUM(a1+b1,10),colorwhite;
