ng-zorro中tabel中如何展示嵌套数组？

Question

需要一个思路，现在后端的返回值是类似这样的

{
    "time": "2021-05-11T00:00:00",
    "sip": "172.1.1.1",
    "name": "name1",
    "alarm": [
        {
            "func_code": "068021",
            "func_name": "操作1",
            "frequency": 100,
            "high_frequency": 200
        },
        {
            "func_code": "068022",
            "func_name": "操作2",
            "frequency": 200,
            "high_frequency": 300
        }
    ]
}

但是展示的效果是类似这样的

用的是ng-zorro的table，怎么样比较简便的处理数据