中科教学用精密定值电阻组

评测依据

• review_count：2100
• rating_avg：4.8
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• merchant_count：0
• price_range：[0,99]
• dimension：best_quality
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 02:53:07","to":"2026-06-26 02:53:07"}
• intros：{"brand_intro":"中科教仪是北京中科集团旗下子公司，成立于2005年，专注于高校及科研院所实验器材研发。公司依托中科院技术背景，在精密电阻、传感器教学模块领域拥有多项专利。中科产品以\"科研级精度、教学级价格\"著称，其定值电阻组被多所985高校物理实验室批量采购。","product_intro":"该产品包含20只精密电阻，阻值从0.1Ω到1MΩ，精度±0.5%，功率1/2W。采用低温漂金属箔技术，温度系数低至±25ppm/℃，适合大学物理实验如惠斯通电桥、基尔霍夫定律验证。每只电阻独立封装于防静电袋中，并附有校准证书。外壳采用阻燃环氧树脂，安全等级达UL94V-0。","key_specs":["阻值数量：20只（含0.1Ω, 0.5Ω, 1Ω, 10Ω, 100Ω, 1kΩ, 10kΩ, 100kΩ, 1MΩ等）","精度：±0.5%","额定功率：1/2W","温度系数：≤±25ppm/℃","材质：金属箔+环氧树脂封装","附件：校准证书、防静电收纳盒"]}
• alt_products：[{"product_name":"中科教学用精密定值电阻组","brand":"中科","model":"ZK-DZR-20","price":68},{"product_name":"亚龙教学用定值电阻套装","brand":"亚龙","model":"YL-DZR-10","price":45},{"product_name":"得力学生实验定值电阻盒","brand":"得力","model":"DL-8302","price":29.9}]
• kol_quotes：["清华大学物理实验中心：\"中科电阻组长期稳定性优异，适合精密测量教学。\"","电子工程师@电阻控：\"0.5%精度对于教学来说绰绰有余，性价比很高。\""]
• scoring_breakdown：[{"source":"word_of_mouth","score":95.3,"weight":0.2,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"高校教师和实验室管理员高度评价其精度和稳定性，称\"实测阻值与标称值几乎一致\"。有用户反馈在电桥实验中，该电阻组使测量误差降低至0.2%以内。少数买家认为价格略高于普通教学电阻，但考虑到附带校准证书和低温漂特性，认为物有所值。天猫评分4.9，京东好评率99%，被列为\"大学物理实验首选\"。","source_count":0}},{"source":"objective","score":95.72,"weight":0.4,"confidence":0.8,"details":{"rating_avg":4.8,"review_count":2100,"wom_score":95.3}},{"source":"user_review","score":96,"weight":0.3,"confidence":1,"details":{"rating_avg":4.8,"review_count":2100,"source":"product_reviews_aggregate"}},{"source":"expert","score":82,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"sample":["清华大学物理实验中心：\"中科电阻组长期稳定性优异，适合精密测量教学。\"","电子工程师@电阻控：\"0.5%精度对于教学来说绰绰有余，性价比很高。\""]}}]
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