这是怎么回事?
json 是{ "48_881109": { "1": "20200310", "7": "3293.360", "8": "3393.667", "9": "3244.726", "11": "3393.667", "13": 3081678400,"19": "34557630000.000", "74": "", "1968584": "", "66": null, "open": 1, "dt": "2230", "name": "\u5316\u5b66\u5236\u54c1", "marketType": "" }}