Unverified80% confidenceTradeoffTime unknown
弹力越强活动越自如，但氨纶比例过高（>8%）的裤子长期水洗后易失去弹性变松垮、面料发亮显廉价，追求耐穿建议氨纶控制在5%以内
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80%
Confidence
Long-term
Relevance
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