The most commonly used are lines, bars, columns, areas, grid, markers, pie, stacked, and so on.

最常用的是线图、条形图、列图、区域图、网格图、标记图、饼图和堆栈图等等。

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BVG means we want a bar chart that is vertically-oriented and the bars are grouped (as opposed to stacked).

bvg意味着我们想要一个垂直方向的条形图，而且其中的柱形条是分组的(而非堆叠的)。

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