得力(deli) 物理教学滑轮组 力学实验套装 含定滑轮动滑轮支架

评测依据

• review_count：15230
• rating_avg：4.8
• brand_reputation：0
• merchant_count：0
• price_range：[0,99]
• dimension：best_value
• sources：["京东","天猫","小红书","什么值得买"]
• time_range：{"from":"2026-06-25 13:25:42","to":"2026-06-25 13:25:42"}
• intros：{"brand_intro":"得力集团始创于1981年，是中国最大的办公与学习用品综合供应商之一。拥有国家级工业设计中心，品控体系通过ISO9001认证。在教具领域，得力坚持\"安全、精准、耐用\"理念，其滑轮组产品采用高精度注塑工艺，滑轮槽光滑度行业领先，有效减少实验摩擦误差。创始人娄甫安以\"让学习更高效\"为使命，推动中国教具标准化进程。","product_intro":"该产品专为初中物理力学教学设计，包含定滑轮、动滑轮、滑轮支架、细绳及钩码。核心卖点在于滑轮采用ABS工程塑料一体成型，转动轴心内置微型滚珠轴承，摩擦系数低至0.02，实验数据更接近理论值。支架底座加宽防滑，适配大多数实验台。相比杂牌产品，得力滑轮组在重复使用500次后仍能保持顺滑，且钩码重量误差控制在±0.5g以内。","key_specs":{"滑轮材质":"ABS工程塑料，抗冲击耐老化","轴承类型":"微型滚珠轴承，静音顺滑","钩码精度":"50g±0.5g，镀锌防锈","支架尺寸":"底座15cm×10cm，高度可调20-35cm","适用年级":"初中八年级物理（人教版/苏教版通用）","配件数量":"定滑轮×2、动滑轮×2、支架×1、细绳×2、钩码×5"}}
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