首先是中文的翻译： 使用Angular 9和Chart.js制作多个堆叠柱状图

然后给出代码示例： HTML文件：

TS文件：

import { Component, OnInit } from '@angular/core';
import { ChartDataSets, ChartOptions, ChartType } from 'chart.js';
import { Label } from 'ng2-charts';

@Component({
  selector: 'app-bar-chart',
  templateUrl: './bar-chart.component.html',
  styleUrls: ['./bar-chart.component.css']
})
export class BarChartComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  }

  barChartOptions: ChartOptions = {
    responsive: true,
    scales: {
      xAxes: [{
        stacked: true,
      }],
      yAxes: [{
        stacked: true,
        ticks: {
          beginAtZero: true,
        }
      }]
    }
  };

  barChartLabels: Label[] = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];

  barChartType: ChartType = 'bar';

  barChartLegend = true;

  barChartData: ChartDataSets[] = [
    { data: [65, 59, 80, 81, 56, 55, 40, 30, 20, 10, 15, 35], label: 'Series A' },
    { data: [28, 48, 40, 35, 43, 50, 60, 70, 80, 90, 100, 120], label: 'Series B' },
    { data: [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120], label: 'Series C' }
  ];

}