ReatKGraph part2

在多维数据图表展示中，一直思考展示方式。
相比起传统的二维横纵坐标数据，这次加入了数据体量的单位，通过块状体积，展示出数据体量。
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In the multidimensional chart display, always think about the presentation.
Compared with the traditional two-dimensional transverse and longitudinal coordinate data, this time a unit of data volume was added to show the volume of data through massive volume.