设置柱子的最小宽度[https://echarts.apache.org/zh/option.html#series-bar.barMinWidth](https://link.segmentfault.com/?enc=dFyuMNRstlIcPC515vSbbQ%3D%3D.cJp1EYJbhpsGwnwfwlf48wPimFw9xE8AU8QvRtaO%2BDBbnQr1etg7mSgL6sp4UaVf0rq0mkaUkLaSmJPfBsanV94VHrhHZuXoYLHTt8SxGqA%3D) 搭配数据量大时的降采样策略[https://echarts.apache.org/zh/option.html#series-bar.sampling](https://link.segmentfault.com/?enc=PpSPv7TNXGXtpwhneGFfxA%3D%3D.MgsHjOYiEOdN6xwyKgwH%2BFJ3pT1y8qfmnbqTY0%2FLk3cAYOjKjU%2F85rU4HVH6CAvvJKPsjHqP1KtQ8lDNX3TAEw%3D%3D)