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非标"足米"线（如标称100米实际80-90米）和"缩水"线（截面不足）不要贪便宜购买，国标线每盘应为100米±0.5%，导体重量是判断真伪的硬指标

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Unverified卷长标注常有虚标，同宽度下号称100米实测仅60-80米很常见；比较时应以卷径大小+重量而非单看标称米数判断真实用量76% similar Unverified整卷长度虚标常见，尤其电商廉价卷；同宽度下(常见30cm/50cm)重量是更可靠的实际用量指标，可要求商家标注净重72% similar Unverified低量程区间（<20g）的实际精度比标称分度值更重要，部分秤标称0.1g但起称值高达5g，称量微量食材会直接跳过或读数为0，选购时应关注最小可称量重量参数69% similar Unverified警惕'超值大规格'虚标：部分产品标称150抽实际按'张'算（3层算3张=1抽），换算后有效抽数腰斩，应看'总重量÷单包重量'计算真实用量68% similar Unverified定位百元以内大众家用体脂秤，主打高性价比和生态联动，不具备心率测量等高端功能68% similar

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