```json { "stock_code": "600031", "stock_name": "三一重工", "market_type": "A", "analysis_date": "2026-02-14T09:05:16.926563", "structure_snapshot": { "structure_type": "uptrend", "ma200_position": "above", "phase": "middle", "key_levels": [ {"price": 24.26, "label": "近期高点"}, {"price": 23.67, "label": "MA5"}, {"price": 22.87, "label": "MA20"}, {"price": 21.71, "label": "MA60"}, {"price": 21.30, "label": "近期低点"}, {"price": 20.44, "label":