[KongchangAI]
Unverified92% confidenceFactTime unknown

PP聚丙烯材质密度低于水,绳体自身可漂浮于水面,无需额外浮力辅助即可保持可见性,这是区别于尼龙/涤纶救生绳的核心特征

1
Sources
92%
Confidence
Long-term
Relevance
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