JYC 双叉音叉 440Hz/256Hz 教学用

评测依据

• review_count：3200
• rating_avg：4.6
• brand_reputation：0
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• price_range：[0,99]
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• sources：["京东","天猫"]
• time_range：{"from":"2026-06-26 02:55:16","to":"2026-06-26 02:55:16"}
• intros：{"brand_intro":"JYC（金音叉）是国内知名的教学乐器与物理实验器材品牌，成立于2005年，总部位于浙江宁波。专注于声学教学用具的研发与生产，产品涵盖音叉、共鸣箱、示波器配件等。以\"精准音准、耐用材质\"为核心，采用铝合金与不锈钢锻造工艺，音叉频率误差控制在±0.5Hz以内，被全国多所中小学及高校物理实验室列为指定采购品牌。","product_intro":"JYC双叉音叉采用高碳钢一体锻造，表面镀铬防锈处理，提供440Hz（标准A音）和256Hz（C音）两种常用频率。叉臂长度精确设计，敲击后余音悠长稳定，适合声波传播、共振、拍频等物理实验演示。附带橡胶锤和共鸣箱底座，便于课堂操作。产品通过国家教学仪器质量监督检验中心认证，是物理教师推荐的基础款音叉。","key_specs":["频率：440Hz / 256Hz","材质：高碳钢镀铬","叉臂长度：约12cm（440Hz）/ 18cm（256Hz）","精度：±0.5Hz","配件：橡胶锤×1、共鸣箱底座×1","适用场景：中学物理实验、音乐调音教学"]}
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• kol_quotes：["@物理老师王明：JYC音叉是我实验室的常备款，学生用着放心。","@乐器维修师老张：440Hz调音很准，比进口品牌便宜一半。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":86.5,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其音准稳定性和做工精细度，多数教师反馈\"敲击声音清脆，余音持续时间长，适合课堂演示\"。部分用户提到256Hz音叉低频表现扎实，与440Hz配合可清晰演示拍频现象。少数评价指出橡胶锤硬度偏软，建议另购硬质锤头以获得更响亮的音色。整体性价比高，京东好评率98%，复购率约15%。","source_count":2}},{"source":"objective","score":80.95984848484848,"weight":0.4,"confidence":0.5,"details":{"rating_avg":4.6,"price":38,"wom_score":86.5}},{"source":"user_review","score":92,"weight":0.3,"confidence":1,"details":{"rating_avg":4.6,"review_count":3200,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["@物理老师王明：JYC音叉是我实验室的常备款，学生用着放心。","@乐器维修师老张：440Hz调音很准，比进口品牌便宜一半。"]}}]
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