Unverified72% confidenceDecision RuleTime unknown
标称拉力常指整卷或多股合计，购买时应确认是'单股拉断力'还是'整体拉力'；再生料绳实际强度可能仅为标称值的50-70%，重要用途需留2倍安全余量
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72%
Confidence
Long-term
Relevance
-
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Unverified材质硬度判断：航空托运认准PP+玻纤或ABS一体成型，箱体承重应≥宠物体重3倍不变形；两半拼接式螺丝固定比卡扣式抗冲击强，托运首选螺丝款78% similarUnverified拉链耐用性是该价位书包的常见损耗点，购买时可实际拉动拉链确认顺滑度，并关注头尾两端接头处车缝是否牢固，这通常是最先开线的位置76% similarUnverified承重标称需打折看：厂家标载重多为静态极限值，实际长期使用建议按标称值的70%装载，避免车架变形和轮轴断裂76% similarUnverified选购时确认单向阀是否为独立硬质阀体而非仅靠薄膜自身弹性闭合，硬质阀体的防回流效果更可靠75% similarUnverified阻力带的阻力值与拉伸倍数正相关而非固定值，同一条带拉伸至2倍与3倍长度阻力可差1倍以上，选购时应关注标注的『在特定拉伸率下的磅数』而非单一数值75% similar
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