scoring_breakdown:[{"source":"word_of_mouth","score":94.4,"weight":0.3,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"京东好评率98%,用户普遍反馈\"切削力强,出光快,一片可完成全车镜面\"。天猫用户称赞\"配合3M粗蜡使用,划痕去除效果明显,羊毛不掉毛\"。部分用户提示\"初次使用需先跑合,避免局部过热\"。专业美容店评价\"性价比高,一片可抛光约10台车\"。","source_count":2}},{"source":"objective","score":96,"weight":0.4,"confidence":0.7,"details":{"dimension":"durability","rating_avg":4.8,"review_count":12500,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":96,"weight":0.2,"confidence":1,"details":{"rating_avg":4.8,"review_count":12500,"source":"product_reviews_aggregate"}},{"source":"expert","score":78.4,"weight":0.1,"confidence":0.4,"details":{"kol_count":1,"scored_count":1,"matched_count":1,"base_score":76,"weighted_score":80,"sample":["汽车美容KOL@洗车佬阿强:3M羊毛垫是入门到进阶的标配,不掉毛不烧漆,新手也能出镜面。"]}}]