type为bar的时候是柱状图
series: [{name: '数量',type: 'bar',yAxisIndex: 1,symbolSize: 6}]
type为line的时候是线状图
series: [{name: '数量',type: 'line',yAxisIndex: 1,symbolSize: 6}]
type为pie的时候是饼状图
series: [{name: '数量',type: 'pie',yAxisIndex: 1,symbolSize: 6}]