scoring_breakdown:[{"source":"word_of_mouth","score":87.1,"weight":0.25,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"累计超过18万条评价,好评率98%。用户普遍称赞其操作简单、走时精准、铃声足够响亮。多数反馈用于煮蛋、炖汤、泡茶等日常烹饪,机械结构耐用,使用两年以上仍正常。少数用户提到旋钮初始阻力偏大,以及铃声在嘈杂厨房中可能不够突出,但整体性价比极高,是入门级首选。","source_count":0}},{"source":"objective","score":96,"weight":0.2,"confidence":0.7,"details":{"dimension":"durability","rating_avg":4.8,"review_count":185000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":96,"weight":0.45,"confidence":1,"details":{"rating_avg":4.8,"review_count":185000,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["\"得力这款机械计时器是厨房里最不会吃灰的小工具,几块钱解决大问题。\"——美食博主@日食记","\"没有电池焦虑,拧一下就能用,老人小孩都会操作。\"——家居博主@收纳女王"]}}]