我使用highchart来统计xaxis类型的类别，我希望xaxis在范围中分开
我想添加这个小分隔符，就像照片x1c 0d1x中那样
我有什么

下面是我使用的代码，对于第一张照片，我使用的accessiblity与rangeDescription可访问性：{范围说明：'范围：2010到2017' }但这里我想使用xaxis：{类型：'类别'}

chart: {
        renderTo: 'container'
    },

  title: {
    text: 'Solar Employment Growth by Sector, 2010-2016'
  },

  subtitle: {
    text: 'Source: thesolarfoundation.com'
  },

  yAxis: {
    title: {
      text: 'Number of Employees'
    }
  },

  xAxis: {
      categories :[2010,2011,2012,2013,2014,2015,2016,2017]
  },

  legend: {
    layout: 'vertical',
    align: 'right',
    verticalAlign: 'middle'
  },

  plotOptions: {
    series: {
      label: {
        connectorAllowed: false
      },
    }
  },

  series: [{
    name: 'Installation',
    data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
  }, {
    name: 'Manufacturing',
    data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
  }, {
    name: 'Sales & Distribution',
    data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
  }, {
    name: 'Project Development',
    data: [null, null, 7988, 12169, 15112, 22452, 34400, 34227]
  }, {
    name: 'Other',
    data: [12908, 5948, 8105, 11248, 8989, 11816, 18274, 18111]
  }],

  responsive: {
    rules: [{
      condition: {
        maxWidth: 500
      },
      chartOptions: {
        legend: {
          layout: 'horizontal',
          align: 'center',
          verticalAlign: 'bottom'
        }
      }
    }]
  }

});```