Unverified85% confidenceDecision RuleTime unknown
落地扇/台扇电机选纯铜线绕组，功率一般40-60W；纯铜绕组散热好、连续运转不易烧，铜包铝绕组虽便宜但长期高温运行寿命明显缩短
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85%
Confidence
Long-term
Relevance
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Unverified功率越高越亮但发热越大，全塑外壳灯管散热差易衰减，长时间高功率使用应选铝塑一体（半铝）或全铝散热外壳，寿命更长80% similarUnverified铝合金线槽散热性优于塑料，适合放置持续发热的电源适配器（如笔记本65W以上充电器），塑料线槽长期高温易发黄变脆80% similarUnverified标称CCA（铜包铝）的取电线不建议用于逆变器等大电流场景，铜包铝载流量约为纯铜的60%，同标称线径下发热更严重，大功率务必选全铜（无氧铜OFC）79% similarUnverified带PD直通的集线器在满负载充电时铝合金外壳温度可达45-55℃属正常现象，选购时优先金属外壳（散热优于塑料）；若长期插硬盘工作，塑料外壳集线器易因积热导致降速79% similarUnverified快充线（尤其100W以上）不建议用金属弹簧完全包裹，金属包裹会影响散热，高负载充电时线缆发热被闷在金属圈内加速老化78% similar
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