scoring_breakdown:[{"source":"word_of_mouth","score":87.1,"weight":0.35,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"综合京东、天猫、小红书及什么值得买平台共4.2万+条评论,用户普遍认为其\"性价比极高、调节方便、保暖效果好\"。专业评测指出,其双侧束带设计能有效分散髌骨压力,适合预防性使用。优点集中在:价格实惠、尺码齐全、适合日常佩戴。缺点主要是:透气性一般(氯丁橡胶材质)、髌骨垫片较薄(对严重损伤支撑不足)、魔术贴使用久了会老化。小红书上有大量\"学生党护膝首选\"的推荐,什么值得买用户评价其为\"百元级护膝的标杆\"。","source_count":4}},{"source":"objective","score":90,"weight":0.2,"confidence":0.7,"details":{"dimension":"after_service","rating_avg":4.5,"review_count":42000,"note":"proxy via rating_avg, v3 will parse specs_json"}},{"source":"user_review","score":90,"weight":0.35,"confidence":1,"details":{"rating_avg":4.5,"review_count":42000,"source":"product_reviews_aggregate"}},{"source":"search_visual","score":68.94285714285714,"weight":0,"confidence":0.87,"details":{"result_count":7,"judgment_score":78,"authority_score":89.3,"top_sources":["zhihu.com","bilibili.com","item.jd.com","smzdm.com","baike.baidu.com"],"judgment_summary":"LP-788护膝髌骨带支撑效果良好,适合中等强度篮球和跑步,性价比高,但长时间运动可能轻微滑动,尺码需注意。"}}]