Unverified75% confidenceFactTime unknown
记忆棉腿枕的密度决定支撑寿命:密度40-50D的高密度记忆棉支撑久不易塌陷,低于35D的低密度棉几个月即变形失去托举力
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Unverified记忆棉密度决定寿命与支撑:50D以上密度回弹慢、支撑久坐不塌陷;40D以下低密度棉3-6个月即出现永久性凹陷失去减压作用90% similarUnverified记忆棉密度决定支撑寿命,高密度(约50D以上)记忆棉回弹慢、不易永久塌陷,低密度慢回弹棉半年即可能形成永久凹坑失去支撑89% similarUnverified记忆棉腰垫需选密度50D以上,低于45D的会在3-6个月内塌陷失去支撑,长期久坐者优先选高密度慢回弹记忆棉+乳胶复合结构88% similarUnverified记忆棉密度直接影响支撑寿命,50D以上密度长期使用不易塌陷;低密度慢回弹棉半年左右会明显变软88% similarUnverified记忆棉密度需≥50D才能长期保持回弹不塌陷,低于45D的记忆棉在3-6个月高频使用后会永久性凹陷失去支撑85% similar
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