中科电工教学用演示电阻箱

评测依据

• review_count：3200
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• dimension：best_value
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• time_range：{"from":"2026-06-26 02:53:06","to":"2026-06-26 02:53:06"}
• intros：{"brand_intro":"中科电工是国内知名的教学仪器品牌，隶属于中国科学院相关产业体系，专注于物理、电工电子类实验器材的研发与生产。品牌以\"精准、耐用、安全\"为核心理念，产品广泛应用于大中专院校及中小学实验室。中科电工拥有多项国家专利，其电阻箱系列产品因高精度和稳定性在业内口碑极佳，多次获得教育装备行业协会推荐。","product_intro":"ZX21型演示电阻箱是一款专为物理教学设计的六档位可调电阻器，采用优质锰铜合金绕线电阻，精度等级0.1级。外壳为高透亚克力面板，内部结构清晰可见，便于课堂演示。阻值范围0-99999.9Ω，步进值0.1Ω，配备大旋钮和刻度盘，操作直观。产品通过国家3C认证，适合中学及大学物理电学实验、电路分析教学。","key_specs":["阻值范围：0-99999.9Ω","步进值：0.1Ω","精度等级：0.1级","档位数：6档（×0.1、×1、×10、×100、×1k、×10k）","材质：锰铜合金绕线电阻，亚克力面板","尺寸：约280×180×120mm"]}
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• kol_quotes：["\"中科电工ZX21是物理老师人手一台的经典教具，透明设计让抽象概念一目了然。\"——@物理实验王老师","\"精度完全满足中学实验要求，旋钮阻尼感恰到好处。\"——@教育装备评测师"]
• scoring_breakdown：[{"source":"word_of_mouth","score":92.89999999999999,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍称赞该电阻箱精度高、旋钮手感顺滑，适合课堂演示。多位物理教师反馈其内部结构透明，学生能直观理解电阻串并联原理。少数用户提到旋钮刻度标识略小，但整体做工扎实。京东好评率98%，常见评价为\"教学利器\"\"性价比高\"。","source_count":0}},{"source":"objective","score":85.16374371859295,"weight":0.4,"confidence":0.5,"details":{"rating_avg":4.7,"price":168,"wom_score":92.89999999999999}},{"source":"user_review","score":94,"weight":0.3,"confidence":1,"details":{"rating_avg":4.7,"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":["\"中科电工ZX21是物理老师人手一台的经典教具，透明设计让抽象概念一目了然。\"——@物理实验王老师","\"精度完全满足中学实验要求，旋钮阻尼感恰到好处。\"——@教育装备评测师"]}}]
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