[KongchangAI]
Unverified85% confidenceFactTime unknown

空心结构(内置PVC/ABS管+外层EVA)比同尺寸实心款更轻、承重更高(通常标称150-300kg)、久用不易变形;纯实心EVA轻但长期高压下易塌陷失去支撑

1
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85%
Confidence
Long-term
Relevance
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